One 填空

1.Yesterday I ____ finish my homework.（must / have to）

2.All employees _____ be on time for work.（must / have to）

3.The doctor ______ get here as soon as he can.( must / have to )

4.Do you ______ work next weekend?(must / have to )

Two 选择

5. Joe ________go to the doctor. His leg is broken.

A. have to       B. can         C. has to        D. may

6. ---________I watch TV now. Mum?

--- Sure, but you ________finish your homework first.

A. Must; needn't     B. Can; may      C. Can; must     D. May; mustn't

7. — Can you come to play soccer with me?

— ____________.

A. Sorry, I can     B. That's all right  C. Sure. I'd love to

8. —I can’t stop smoking, doctor.

—For your health, I think you _____.”

A. must         B. need                  C. have to

Three 判断句子语法十否错误

9、She have to do her homework on the weekend.

10、I have to clean the room because there are too dirty.

答案：

1、have to

2、must

3、must

4、have to

5、C

6、C

7、C

8、C

9、have  改为  has

10、have to 改为 must