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Auxiliary Verbs Exercise for ESL Students

October 16, 2025 A2pdf

Fill in the blanks with an appropriate modal or another verb.

Progress 0 of 12 answered
1Who is that woman with her? She might ............... her sister.
Wrong!
Use "be" after "might" to talk about a present possibility.
2Why didn't he open the door? He might not ............... the doorbell.
Wrong!
Use "have heard" after "might not" to give a possible past reason.
3I wonder why they haven't replied to my email. They may not ............... it.
Wrong!
Use "have received" after "may not" to suggest a possible past explanation.
4They couldn't repair my computer, so next week I ............... a new one.
Wrong!
Use "will have to buy" for a future necessity caused by the current situation.
5You can stay at home if you want. You ............... with us.
Wrong!
Use "don't need to come" to say that coming is optional, not necessary.
6We ............... reserved a table. That restaurant was almost empty.
Wrong!
Use "needn't have" when something happened but was not necessary.
7The house doesn't have to be big, but it must ............... a garden.
Wrong!
Use "have" after "must" to say that a garden is necessary.
8This house ............... every day.
Wrong!
Use "is cleaned" because the house receives the action in the present simple passive.
9............... anybody clean this carpet?
Wrong!
Use "Did" to form a past simple question with the base verb "clean".
10All flights ............... due to fog.
Wrong!
Use "were cancelled" because the flights received the action in the past simple passive.
11This road is rarely ...............
Wrong!
Use "used" after "is" to form the present simple passive.
12Somebody ............... me of stealing the money.
Wrong!
Use "accused" because "somebody" is the subject doing the action in the past simple.

Exercise complete

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Answers

  1. Who is that woman with her? She might be her sister.
  2. Why didn’t he open the door? He might not have heard the doorbell.
  3. I wonder why they haven’t replied to my email. They may not have received it.
  4. They couldn’t repair my computer, so next week I will have to buy a new one.
  5. You can stay at home if you want. You don’t need to come with us.
  6. We needn’t have reserved a table. That restaurant was almost empty.
  7. The house doesn’t have to be big, but it must have a garden.
  8. This house is cleaned every day.
  9. Did anybody clean this carpet?
  10. All flights were cancelled due to fog.
  11. This road is rarely used
  12. Somebody accused me of stealing the money.

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Related lesson in the course Be, have and do: main verbs and helpers Module 01: Sentence foundations · Lesson 3

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