3.I’m sorry. I _____go now. My father told me on the phone that my mother was ill.

　　A. can B. may C. have to D. think

　　4.----Let’s go dancing tonight.

　　----Sorry, I_____.I have to go to a meeting.

　　A. mustn’t B. may not C. needn’t D. can’t

　　5.----Shall I book some seats for the concert?

　　----____, I’ve already my homework.

　　A Yes, you may B. No, you mustn’t C. No, you didn’t D. I’d rather not

　　6.----Mum, I’ve finished my homework. _____I go out and play for a while?

　　----No, I’m afraid not. I have some other exercises for you.

　　A. Must B. May C .Would D. Will

　　7.Cars, buses and bikes ____stop when the traffic light is red.

　　A. can B .must C. may D. need

　　8. ----_____I borrow your MP3? ---Sure. Here you are.

　　A. May B .Should C. Must D. Would

　　9.---Should I call Mary here right away?

　　----No, you _____. She is on the way here.

　　A. mustn’t B. needn’t C. can’t D. couldn’t

　　10.----Must I stay here for hours?

　　----No, you _____. You can leave any time.

　　A. mustn’t B .needn’t C. can’t D. couldn’t

　　11.Mary_____be at home. I saw her in the library just now.

　　A. mustn’t B. have to C .shouldn’t D. can’t

　　12.----I like the party so much, but I _____go home. It’s too late.

　　----What a pity!

　　A. mustn’t B. have to C. may D. can’t

　　13.----What did your P.E. teacher say about your high jump at the sports meeting? ----He said that