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Pall doesn't have to be made ___He always
Pall doesn't have to be made ___He always works hard A.learn B.to learn C.learned D.learning 为什么不选C选B
人气:303 ℃ 时间:2019-12-11 02:18:14
解答
被动语态中原来要省去to的不定式,现在必须加to
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