I. 用适当的情态动词填空。
1.— __________ you skate?
—No, I __________ . But my brother __________ .
2. We __________ cross the street carefully.
You __________ ride a bike in heavy traffic.
3. He is very clever. He __________ know the answer.
4. — __________ I help you?
—Ｉ'm looking for a red coat.
5. —Where's my pen, Mom?
—It __________ be in your pocket, I'm not sure.
6. — __________ I watch TV now,Dad?
—No, you __________ . You __________ finish your homework first.
7. — __________ I finish the exercises in class?
—No, you __________ . You can finish them after school.
But you __________ finish them today.
8. Meimei doesn't look well. She __________ be ill.
9. Where's my bag? I __________ find it.
II. 选择填空。
1. You ______ go and ask Fang Hai. He _______ know the answer.
A. must, can B. must, may C. need, can D. can, may
2. You ______ play on the road. It is dangerous.
A. mustn't B. may C. can D. must
3. _______ I use your telephone?
A. Do B. May C. Have D. Will
参考答案：
I. 1. Can, can't, can 2.must, mustn't 3. must / may 4. Can / May 5. may 6. Can / May, can't, must 7. Must, needn't, must 8. must 9. can't
II. DAB
