選用適當?shù)那閼B(tài)動詞填空。
(can, may, must, can't, mustn't. )
1．________ you speak French? No, I ________, but Mr. Black ________.
2．________ I use your knife? Certainly.
3．________ we go out and play football now? No, you ________. You ________ finish your
homework first.
4．She ________ hear you clearly. Please speak a little louder.
5．How long ________ I keep this book? You ________ keep it for two weeks.
