| must，can，needn't，mustn't，have to |
Can
Can
I come in？-Yes，please．
（2）We should be quiet in the theatre．We
mustn't
mustn't
speak loudly．（3）-Must I return this book to the library today，Mrs．Brown？
-No，you
needn't
needn't
．（4）-Must I stay with you，Grandpa？
-No，you don't
have to
have to
．You can go swimming with your friends．（5）We
must
must
be careful when we cross the road．【考点】简单句．
【答案】Can；mustn't；needn't；have to；must
【解答】
【点评】
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发布：2024/4/20 14:35:0组卷：21引用：1难度：0.5
