题目内容
In order _________ well,this exercise must be taught again and again.A.to do B.to doing it C.to be done D.to do it
答案:C
解析:
解析:
| C in order to 同不定式连用,作目的状语,该句主语是不定式的逻辑宾语,故用被动语态。 |
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