D
固定用法：be +adj.to do sth 做……怎么样（was difficult to answer 很难回答）可答案是B有时答案也有错的呀，正确的是D
the last question that our english teacher asked was difficult ___
the last question that our english teacher asked was difficult ___
A to answer toB to be answered C answering D to answer
选择哪个,为什么?谢谢!
A to answer toB to be answered C answering D to answer
选择哪个,为什么?谢谢!
英语人气：214 ℃时间：2019-08-18 09:05:47
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