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最佳答案：I was happy.I wasn't happyWas I happy?You were a student last year.You weren't a
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最佳答案：yes,you must.no,you needn't.
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最佳答案：？？
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最佳答案：isIs the woman in yellow your mother?Yes,she is./ No ,she isn'tIs the little gir
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最佳答案：can 能,能够,有能力...must 必须/一定/一定要,must be一定是（表示有把握的推测）may可能,也许/可以（用于客气地询问是否可以做某事..）/
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最佳答案：1.May I的回答一般用Yes,you can.或No,you can't.2.success successful succeeda success一个成功
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最佳答案：1.Yes,you must.No,you need't.一般没有用need提问的2.be suppose sb.do sth.3.没有Who答案吗?是who才
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最佳答案：Was Simon's father a compute engineer three years ago? Yes, he was. No, he wasn'
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最佳答案：1、may:肯定：might,may否定：may notmust：肯定：must否定：needn't2、开着的灯：keeps the light3、做了：do笑
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最佳答案：1.speakCan he speak English very well?Yes,he can./ No,he can't.2.gets upDoes he