He had a difficult time ______ the lost boy._刷题宝

题干

He had a difficult time ______ the lost boy.

A：find

B：to find

C：finding

D：be finding

上一题下一题 0.0难度选择题更新时间:2014-10-27 06:39:07

答案(点此获取答案解析）

C

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