问题 填空题
从方框中选择适当的情态动词,并用其正确形式填空。
can, must
1. _____ you see those people over there?
2. You _____ play fire, because it ' s dangerous.
3. —_____Iborrow your bike?
   —No, you _____
may, need
4. —Must we go home before ten o'clock?
    —No, you_____
5. —_____I play computer games, Dad?
    —Yes, you can, but only for an hour.
6. Tom _____morrow, but I'm not sure.
答案

1. Can    2. mustn't    3. Can; can't    4. needn't    5. May    6. may

单项选择题 B1型题
单项选择题