Air Canada Rebooking Left a Delayed Traveler Without a Return Flight

Study the questions and tasks

Work through the material below, or start the interactive practice above to complete an attempt. Try the exercises before opening any answer or transcript sections, then use them to review your work.

Practice level

C2. Try this level if you can follow the instructions and understand most of the language; choose an earlier level if you need more support.

Question formats

Single choice

How to approach this practice

Read the complete sentence and notice the subject, verb form, time reference and word order before answering.

1. Question 1 · Single choice

   Choose one answer.

   Which revision most effectively preserves the article's meaning while using a concessive construction?

   1. Although the rebooking appeared helpful, it left the return journey unresolved.
   2. Despite the rebooking appeared helpful, it left the return journey unresolved.
   3. Although appearing helpful the rebooking, it left the return journey unresolved.
   4. The rebooking appeared helpful, although leaving unresolved the return journey.
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   Answer

   Although the rebooking appeared helpful, it left the return journey unresolved.

   Although introduces the contrast between apparent assistance and the unresolved return problem.

2. Question 2 · Single choice

   Choose one answer.

   Which sentence uses inversion appropriately for emphatic C2-level emphasis?

   1. Only after the traveler arrived did the seriousness of the omission become apparent.
   2. Only after the traveler arrived the seriousness of the omission became apparent.
   3. Only after arrived the traveler did the seriousness become apparent.
   4. Only after the traveler did arrive became the omission's seriousness apparent.
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   Answer

   Only after the traveler arrived did the seriousness of the omission become apparent.

   Only after the traveler arrived correctly triggers subject-auxiliary inversion in the main clause.

3. Question 3 · Single choice

   Choose one answer.

   Which completion uses a grammatically correct mixed conditional?

   1. If the cancellation had been disclosed, she would not now be facing this expense.
   2. If the cancellation were disclosed, she would not have faced this expense.
   3. If the cancellation had disclosed, she would not now face this expense.
   4. If the cancellation was disclosed, she would not be facing this expense now.
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   Answer

   If the cancellation had been disclosed, she would not now be facing this expense.

   The past condition explains a present consequence: current exposure would differ now.

4. Question 4 · Single choice

   Choose one answer.

   Which sentence correctly uses a reduced relative clause?

   1. Arriving in Europe without her expected return flight, the traveler arranged transport home.
   2. Arrived in Europe without her expected return flight, the traveler arranging transport home.
   3. The traveler, arriving in Europe, without her expected return flight arranged transport home.
   4. Arriving the expected return flight in Europe, the traveler arranged transport home.
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   Answer

   Arriving in Europe without her expected return flight, the traveler arranged transport home.

   “Arriving” correctly modifies the traveler, who arrived without the expected return flight.

5. Question 5 · Single choice

   Choose one answer.

   Which option correctly completes the sentence with a mandative subjunctive?

   1. The article recommends that passengers verify every segment.
   2. The article recommends that passengers verifies every segment.
   3. The article recommends passengers verified every segment.
   4. The article recommends that passengers should verifies every segment.
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   Answer

   The article recommends that passengers verify every segment.

   Formal English uses the base verb after recommendations that passengers verify every segment.

6. Question 6 · Single choice

   Choose one answer.

   Which sentence demonstrates correct parallelism?

   1. Passengers should confirm the outbound flight and review the return segment.
   2. Passengers should confirm the outbound flight and reviewing the return segment.
   3. Passengers should confirming the outbound flight and review the return segment.
   4. Passengers should confirm the outbound flight and to review the return segment.
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   Answer

   Passengers should confirm the outbound flight and review the return segment.

   The coordinated verbs confirm and review share the same grammatical structure.

7. Question 7 · Single choice

   Choose one answer.

   Which option correctly uses a nonrestrictive relative clause?

   1. The $800 expense, which followed the undisclosed cancellation, altered the case's significance.
   2. The $800 expense which followed the undisclosed cancellation altered the case's significance.
   3. The $800 expense, that followed the undisclosed cancellation, altered the case's significance.
   4. The $800 expense, followed the undisclosed cancellation, which altered the case's significance.
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   Answer

   The $800 expense, which followed the undisclosed cancellation, altered the case's significance.

   The commas correctly mark additional information about the $800 expense.

8. Question 8 · Single choice

   Choose one answer.

   Which completion correctly uses a fronted negative adverbial?

   1. Under no circumstances should a rebooking be treated as proof that every segment remains active.
   2. Under no circumstances a rebooking should be treated as proof that every segment remains active.
   3. Under no circumstances should be treated a rebooking as proof that every segment remains active.
   4. Under no circumstances a rebooking treated should be as proof that every segment remains active.
   Check answers and explanations

   Answer

   Under no circumstances should a rebooking be treated as proof that every segment remains active.

   “Under no circumstances” requires inversion in the following auxiliary phrase.

What to review next

After checking an answer, explain the rule in your own words and write a new sentence using the same pattern. Revisit any rules you could not explain.

A focused practice result shows how you did on these tasks. Use several activities across skills to decide what to study next; one practice score does not certify an overall CEFR level.