Look! She is laughing. She ______ something funny or happy.
Chọn đáp án A
The book is optional. My professor said we ______ read it if we needed extra information for the essay. But we ______ read it if we don’t want to.
You ______ book the tickets for the play in advance because they sell out quickly.
I was reading the book last night before I went to bed. I never took it out of this room. It ______ around here somewhere. Where ______ it be?
It ______ Sam who called and did not leave a message on the answering machine. I am not sure.
Margaret promised to meet us at the entrance to the theater tomorrow night. She ______ for us when we get there.
Your diving equipment ______ regularly if you want to keep it in good condition.
John ______ drive when he was eighteen.
A. cannot B. could not C. would rather not D. might not
You ______ the air pressure in your tires if you do not want to get a flat tire on your trip.
Dane ______ the book we borrowed from the library. It was on the table, but now it has gone.
Please make sure to water my plants while I am gone. If they don’t get enough water, they ______ die.
You ______ tell Sandra anything about our story. She ______ keep a secret.