Duolingo 英语测试练习题库

Expand means to make something larger or increase its range. A company expanding its services offers them in more places, while reducing, cancelling or delaying would not match the idea of adding new countries.

Review means to look at something again carefully. Checking a document for mistakes is exactly what reviewing involves, while ignoring, deleting or printing it would not help you find errors before sending.

Since is used with a specific starting point such as 2019, while for is used with a period of time. At and during do not fit this pattern because the sentence refers to a point in the past that continues to the present.

A real conditional uses the present simple in the if clause and will plus the base verb in the main clause. Since the rain is a possible future situation, will hold is the correct form; the other options are past or hypothetical.

The notice gives two schedules: weekday hours from 9 a.m. to 6 p.m. and Saturday hours from 10 a.m. to 4 p.m. Because the question asks specifically about Saturday, the Saturday hours are the correct choice; the other times belong to weekdays or are not listed.

The speaker says the meeting has been moved from Tuesday to Thursday, so only the day changed. The time stays the same, and the message gives no information about the room or the speaker.

A natural request uses a polite conditional form and clear word order. The first sentence expresses appreciation and a specific deadline, while the other options have missing words, broken grammar or confusing sentence structure.

When someone offers coffee, a natural response is to accept politely with yes, please and thank you. The other choices ignore the offer, define coffee, or ask an unrelated question.

Adapt means to adjust to a new situation, which fits learning how an office works. Adopt means to take something as your own, adept is an adjective meaning skilled, and attach means to fasten or connect.

People is plural, so the past form were is needed. Was is singular, is and are are present tense, and the sentence clearly refers to last night.

The notice states a clear requirement: visitors must show their ID at the front desk. There is no mention of payment, calling the manager or leaving bags outside, so those options add information that is not in the text.

The speaker gives directions and then says the pharmacy is next to the bakery. This directly answers the question, while the other locations are not mentioned in the message.

The clearest sentence places the reason in a subordinate clause followed by the main result. The other versions have unnatural word order, omit the subject, or place words in a confusing sequence.

When someone politely declines an invitation, a friendly response accepts the apology and keeps the relationship positive. Saying no problem, maybe next time does this naturally, while the other replies are rude, defensive or unrelated.

Delayed means that something is made late, which matches a train affected by heavy snow. Arrived, booked and boarded are verbs used in different contexts and do not describe being made late.

After neither of, the singular verb is standard in formal English because neither refers to one item at a time. Are, were and have been are plural forms, so they do not agree with the singular subject.

The email clearly asks the applicant to attach a CV and a short cover letter. References, receipts and passport copies are not mentioned, so choosing them would add details that the message does not support.

The announcement tells passengers that the Berlin flight is boarding at Gate 12, so they should go there. The message does not mention a restaurant, baggage collection or ticket changes.

Let's needs an apostrophe because it is short for let us, and a comma separates the statement from the tag question shall we. The sentence also needs a question mark; the other versions miss one or more of these details.

The question asks about the speaker's experience of a recent trip, so a natural answer gives a short evaluation such as wonderful and thanks the person for asking. The other responses avoid the question or give unrelated information.

A case is a protective cover for a phone, so buying a new one makes sense after the old one broke. Course, cause and cope do not refer to a phone accessory.

Money is uncountable, so much is the correct quantifier. Many and a few are used with countable nouns, and some would not fit naturally in this negative sentence.

The sign prohibits parking only during the hours between 8 a.m. and 6 p.m. Outside that window, such as before 8 a.m. or after 6 p.m., parking is allowed; the other options reverse the rule or say parking is always forbidden.

The speaker directly asks the listener to call back later and explains that a meeting is the reason. Nothing in the message mentions a report, ending the meeting or a new phone number.

A professional email uses a formal greeting structure and complete sentences. I am writing to ask about the position is polite and clear, while the other options use slang, missing subjects or demanding language.

Do you mind if I... asks for permission, and a polite answer is not at all, meaning you do not object. The other options ignore the permission request, describe the window, or respond with an unrelated instruction.

Fresh is an adjective describing the seafood, and adjectives are used before nouns. Freshly is an adverb, freshen is a verb, and fresher is a comparative adjective that would need a comparison.

Inaccurate means not correct or exact, so it fits statements that contradict the data. Accurate means correct, obvious means easy to notice, and brief means short, none of which match the idea of disagreeing with the evidence.

The past perfect had started shows that the film began before we arrived. Has started is present perfect, starts is present simple, and is starting is present continuous, so none of them correctly place the event before a past moment.

The word although signals a contrast: the city is small, yet it still attracts tourists. The sentence gives the reason as historic buildings and lively markets, so the main idea is that size does not stop the city from appealing to visitors.

The speaker uses the conditional would have attended and then explains the real obstacle with but: a doctor's appointment. No other reason is mentioned, so the appointment is the only supported explanation.

Clear English normally follows subject, verb, object order with time and place information at the end. The first sentence does this, while the other versions move words around in ways that make the meaning difficult to follow.

A natural opinion answer gives a positive point and then a specific suggestion. I like it, but the colors could be brighter gives feedback, while the other replies describe design, avoid the question, or make a general statement.

Transformed means changed completely, which fits the effect of technology on communication. Transported means moved, transferred means moved from one place to another, and translated means changed into another language.

The past tense asked in the main clause requires a past form in the reported question. Had received is past perfect and matches the time before she asked; the present and future forms do not agree with the past context.

The advertisement states a clear condition: applications received by March 15 qualify for the discount. The other options invent dates or say there is no deadline, which contradicts the text.

The word if makes the concert conditional on the weather. The speaker does not say it is cancelled or moved indoors, and there is no mention of an earlier time, so only the conditional plan is supported.

Brief and lasted only ten minutes say the same thing, and in duration and in length repeat the idea of time. The shortest clear version keeps one time expression and removes the extra words.

A helpful response agrees to the request and says what the speaker will do. Of course, I'll take those two answers the question directly, while the other options describe boxes, question them, or make a general comment.

An increase means a rise in number or level, which is a positive result of an update. Decrease means a fall, delay means lateness, and failure means lack of success, none of which are described as significant in this context.

When not only begins a sentence, the auxiliary verb moves before the subject, forming inversion. Did she miss is the correct order; the other options keep normal statement order or use the wrong auxiliary placement.

The passage connects walking at least 30 minutes daily with better sleep and lower stress. It does not say walking causes insomnia, that less exercise helps, or that only young adults benefit, so the first option restates the finding accurately.

The speaker proposes the coastal road and admits it is longer while explaining that the view makes it worthwhile. The speaker does not choose the highway, mention lunch, or say to avoid roads.

Concise writing removes repeated ideas and wordy phrases. The first sentence states the cause and result once, while the other versions add because of the fact that, because of it or as a result after the cause is already clear.

The question asks about a hypothetical situation, so a natural answer uses would and describes a plan. I would invest part of it and travel answers directly, while the other options comment on lotteries or tickets instead.

Expose means to leave something without protection, so exposing a device to water can damage it. Connect, charge and update describe normal actions with devices and do not match a warning about water.

Which introduces a non-defining relative clause about a thing, and the house is a thing. Who and whom refer to people, and whose shows possession, so only which correctly connects the clause to the house.

The email does not say late reports are rejected, returned or ignored. It says they will be processed the following month, so the correct answer is the only option that matches the stated policy.

I'd rather shows a preference, and the speaker names the morning train even while admitting that mornings are difficult. No other train time is mentioned, so the morning train is the clear choice.

Standard English word order places the subject before the verb and the object after it, with adverbs near the verb. The first sentence follows this pattern, while the others scatter the object, adverb and time phrase in confusing positions.

A supportive response acknowledges the speaker's worry and gives encouragement. You've practiced a lot; you'll do great does this naturally, while the other replies define presentations, state a general fact, or ask a scheduling question.

Summarize means to give a short version of the main points, which is a common academic task. Exaggerate means to make something seem larger, contradict means to disagree, and translate means to change into another language.

For is used with a duration such as five years, while since needs a starting point. During is used inside a period, and until refers to an endpoint, so for is the correct preposition here.

The sign makes swimming conditional on a lifeguard being present. It does not mention an empty pool, goggles or a swimming test, so the only supported requirement is the lifeguard.

Contradictory means that two things cannot both be true, which explains why the researchers repeated the experiment. Identical means the same, obvious means clear, and temporary means lasting only a short time.

This is a third conditional about a past unreal situation. The if clause uses had plus past participle, so the main clause uses might have plus past participle. The other forms belong to present, future or simple conditional patterns.

The word while sets up a contrast: urban farming has limits, but it still brings benefits such as shorter food miles and better access to fresh produce. Therefore it has a useful role without replacing industrial agriculture.

The speaker calls the offer tempting but says hidden costs may cancel out the savings. That combination shows caution or skepticism, not excitement, certainty or indifference.

The original ideas contrast power with difficulty for beginners. Although powerful keeps the contrast and the meaning, while the other options change the relationship by joining the ideas with and, because, or reversed logic.

The question is a past unreal conditional, so the answer should use would have and describe a different past choice. Yes, I would have taken the subway matches the grammar and answers directly.

The two messages give different dates: Monday in the email and Wednesday in the speaker's message. Since the dates do not match, the statement that they are the same is false.

The speaker says the report will be finished by noon, which is a future plan. It has not happened yet, so the statement that the person has already finished the report is false.

The sign makes the badge a condition for entry: without it, entry is not allowed. Therefore visitors do need a security badge to enter, and the statement is true.

Rarely eat out means the speaker eats in restaurants only occasionally, and the reason is a preference for cooking at home. This supports the statement that the speaker usually cooks at home.

The text says many people assume online courses are easier, but it does not agree with that assumption. It actually says the courses require strong time management, so claiming the text says they are always easier is false.

The speaker says the bus normally arrives every ten minutes, but this week construction has delayed it. The word always makes the statement too absolute, so it is false.

Nine in the morning falls inside the stated hours of 6 a.m. to 10 p.m. Since the gym is open during that whole window, the statement that it is open at 9 a.m. is true.

The article says solar panels cost more initially but can pay for themselves over time. It never claims they are always cheaper, and always makes the statement too absolute, so it is false.

Happy and glad both describe a feeling of pleasure or contentment, so they are synonyms. Angry is the opposite emotion, and tired describes needing rest rather than happiness.

I'm afraid I can't make it and I'd love to, but I have another commitment both refuse the invitation politely. The other two options accept the invitation, so they do not match the task.

Third-person singular subjects take the s form in the present simple: doesn't for negative and goes for positive. She don't and He go do not follow this agreement rule.

Review and consider both fit the idea of thinking about the policy before a meeting. Ignore and forget have opposite meanings and would describe not preparing.

We are moving next month uses the present continuous for an arranged future plan, and I will call you after lunch uses will for a future intention. The other sentences describe past and habitual actions.

Formal academic writing uses precise nouns and objective verbs. Suggest a connection and examines the effects are formal, while stuff, lots of and informal phrasing make the other sentences casual.

Annual relates to a year, temporary means not permanent, remote means away from a central location, and flexible means able to adapt. Matching each term to its definition checks both vocabulary and reading precision.

The endings must follow the logic of each clause: help goes with asking, closing time goes with shopping earlier, hard study explains passing, and arriving early contrasts with locked doors.

Commence means begin, terminate means end, residence means home, and assistance means help. Recognizing formal equivalents helps with academic reading and formal writing tasks.

Each phrase has a clear pragmatic meaning: repeating requests clarification, getting back to someone promises a later reply, it's up to you gives the decision away, and that makes sense signals understanding.

Signal words organize a text: however contrasts ideas, for example gives an illustration, in conclusion summarizes, and as a result shows a consequence. Recognizing them improves reading speed and comprehension.

The corrections fix agreement and verb forms: present simple needs goes, seen follows have, taller cannot be doubled with more, and were agrees with they.