He made a survey ----his classmates last week.A.at B.to C.of

问题描述:

He made a survey ____his classmates last week.A.at B.to C.of D.for
1个回答 分类:英语 2014-12-01

问题解答:

我来补答
都不是,应该是into 或者on,表示“对…的调查”
 
 
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