选用适当的情态动词填空。 |
(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. |