He found ____ very difficult _____ the problem.A．that; to work outB．this; workin_刷题宝

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He found ____ very difficult _____ the problem.

A．that; to work out	B．this; working out
C．himself; work out	D．it; to work out

上一题下一题 0.85难度单选题更新时间:2015-07-03 07:45:53

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