I found it ----to sleep because of the terrible noise.

问题描述:

I found it ----to sleep because of the terrible noise.
1个回答 分类:英语 2014-10-15

问题解答:

我来补答
difficult/ hard
再问: 这里只能填形容词?
再答: 是。动词不定式to sleep做宾语。it是形式宾语。形容词做补足语
 
 
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