1.I can hear the Browns’ phone bell ring but no one is answering it; they ______ be at home.
A. can’t B. mayn’t C. probably not D. shouldn’t
Professor Wang ______ be in New York because I met him in town just now.
A. can’t B. might not C. may not D. may
-Listen, Mary is singing in the next room. -That ______ be Mary. She’s in hospital.
A. may not B. shouldn’t C. wouldn’t D can’t
She earns a good salary, so she ______ be deep in debt.
A. can’t B. must C. needn’t D. should
It is going to rain you ______ take your umbrella with you.
A. had better to B. would rather to C. would rather D. had better
6.You had better ______ the teacher about this.
A. ask B. to ask C. asked D. asking
7.You had better ______ where you are.
A. remaining B. to remain C. remain D. remained
8.你最好马上去看医生。 [You had better go to see the doctor immediately]
9.I would rather ______ with you.
A. not to go B. to not go C. to go D. not go
10.They will get well soon. You ______ worry.
A. can’t B. couldn’t C. mustn’t D. needn’t
答案：1. A 2.A 3.D 4.A 5.D 6.A 7.C 9.D 10.D