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最佳答案：you must be more carefully when go through the street
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最佳答案：You must stay here.Must I stay here?Yes,you must.No,you needn't.
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最佳答案：肯定回答是yes,you must否定回答是no,you needn't or no,you don't have to.
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最佳答案：Yes,you must .No,you needn't.我必须做家庭作业么?是,你必须不,你不必
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最佳答案：must ; yes,.must.No,.needn't.can; yes ,...can.No,.can't.should; yes,.should.No,.
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最佳答案：must-Yes,you should./No,you needn't.need-Yes,you should/may/can/need./No.you nee
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最佳答案：may I do...Yes,you may.No,you can't/ mustn't.Can I do sth?Yes,you can.No,you can
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最佳答案：must-Yes,you should./No,you needn't.need-Yes,you should/may/can/need./No.you nee
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最佳答案：C.musthave to 必须，不得不，表示由客观情况定的must 必须 表示主观因素
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最佳答案：1、在回答must开头的一般疑问句时,肯定回答用must,否定回答用needn't或don't have to.如：1)—Must I finish my ho