11. I found this book on my desk when I came to class. It must ……. by one of the students in earlier class.
A. be left B. have been left C. leave D. have left
12. You had better ………………….your chores before Mom gets home.
A. be finished B. have finished
C. have been finished D. finish
13. These books will have to …………………. to the library tomorrow.
A. return B. have returned
C. being returned D. be returned
14. Ann’s birthday was on the 5th, and now it’s already the 8th. Her birthday card …. a week ago.
A. will be sent B. can be sent
C. should have been sent D. should have sent
15. You …………………. me to Dr. Gray. We’ve already met.
A. don’t have to introduce B. mustn’t be introduced
C. shouldn’t introduce D. mustn’t introduce
16. Bill ………………….Ann to the party tomorrow.
A. will be invited B. will invite
C. will have invited D. will have been invited.
17. A new hospital ………………….in this area.
A. are going to be built B. builds
C. is going to be built D. is going to build
18. Mike …………………. What’s going on in his English class.
A. can’t understand B. can’t be understood
C. could have understood D. could have been understood
19. Our test papers ………………….by our teachers now.
A. are marking B. are being marked
C. will mark D. will be marked
20. ………………….the birds in your garden at three o’clock yesterday afternoon?
A. Did you feed B. Were you fed
C. Were you being fed D. Were you feeding