This grammar exercise tests your understanding of modal auxiliary verbs. Fill in the blanks.
1. She ................................ busy at that time.
Please select 2 correct answers
Correct!
Wrong!
2. It ............................ there. I clearly remember putting it there.
Correct!
Wrong!
3. You ............................ mistaken.
Correct!
Wrong!
4. He ............................... by now.
Correct!
Wrong!
5. It ............................. an accident.
Correct!
Wrong!
6. He .................................. ill yesterday.
Correct!
Wrong!
7. Nobody is answering the doorbell. They ............................... out.
Correct!
Wrong!
8. Where is Dad? He ........................... in his room.
Please select 2 correct answers
Correct!
Wrong!
9. He is not in his chair. He ............................. to the cafe.
Correct!
Wrong!
10. We .............................. waited for him.
Correct!
Wrong!
11. You ........................... for me. You can leave when you are ready.
Correct!
Wrong!
12. She left work at 6. She ............................. here soon.
Correct!
Wrong!
Answers
1. She might have been busy at that time.
2. It must be there. I clearly remember putting it there.
3. You must be mistaken.
4. He should have arrived by now.
5. It might have been an accident.
6. He might have been ill yesterday.
7. Nobody is answering the doorbell. They must have gone out.
8. Where is Dad? He must be in his room.
9. He is not in his chair. He might have gone to the cafe.
10. We needn’t have waited for him.
11. You needn’t wait for me. You can leave when you are ready.
12. She left work at 6. She should be here soon.
