________isimpossible________upto

发布时间：2020-07-28 10:38:46

________ is impossible________ up to Grade Two without passing the examination．A.It；for him to goB.It，him to goC.There；for him toD.There；for him to go

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A解析用复合不定式作句子的真正主语，用it作形式主语。
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