一、用适当的动词和情态动词填空

1．Must I wait till¹ he comes back ? No, you ________ .

2．You ________ not make so much noise in the hospital.

3．Can you ride a bike ? No, I ________.

4．Do you speak English ? Yes, I ________ .

5．________ I go home now ? No, you stay here.

6．________ you like to help me ?

7．My mother is ill. I ________ stay at home and look after her.

8．________ I use your car ? Yes, you ________

9．________ we begin our class now ?

二、词形转换

1．You must wash the dishes². =You____ ____ wash the dishes.

2．She can cook well. =She ____ ____ ____ cook well.

3．Wash your face at once. =You ________wash your face at once.

4．They couldn't find any secrets³（秘密）.

=They ____ not ____ to find any secrets.

5．You should be here on time. =You ____ ____ be here on time.

三、选择填空

1．You ________ return⁴ the book now. You can keep it till next week.
　A． can't B．mustn't C．needn't D．may not

2．Can I leave this door open at night ? No, you ________ .
　A．should better not B．would⁵ better not
　C．had⁶ better not

3．Hurry up. He ________ for us at the station.
　A． must wait　B．must be waiting
　C．should wait D．should be waiting

4．The food must be good. No, it be ________ good.
　A．must not B．needn't
　C．wouldn't D．cannot

5．Your shirt is rather⁷ dirty. ________ I wash it for you ?
　A．Do B．Will C．Have D．Shall