Bài tập - Ngữ pháp - Động từ khuyết thiếu Can/could/may

1. They _____ be away for the weekend but I’m not sure.

• A. can
• B. may
• C. can’t
• D. a and b

2. _____ you help me? Sure.

• A. could
• B. couldn’t
• C. can
• D. can’t

3. You _____ become a singer if your voice is bad.

• A. could not
• B. couldn’t
• C. can
• D. can’t

4. I don’t know but he _____ be there.

• A. may
• B. can
• C. could

5. _____ you wait a minute, sir?

• A. can’t
• B. couldn’t
• C. can not
• D. could

6. I believe that he _____do it. He prepares carefully.

• A. may
• B. can
• C. may not
• D. can not

7. The deaf _____ hear anything.

• A. can’t
• B. can
• C. couldn’t
• D. could

8. I am not there. Jean _____ be dangerous.

• A. can
• B. can’t
• C. may
• D. a and c

9. _____Kimmie go to the park with me, Mrs. Smith?

• A. Can
• B. Could
• C. May
• D. a, b and c

10. You _____ know what I give you. It’s secret.

• A. couldn’t
• B. could
• C. may