You can not imagine the difficulty they had ____ the problem. It isn’t ____ easy. A．to solve; so B．s...
2023-01-09 02:16:53 101次 江苏省2009-2010学年度高一下学期期中考试试卷（英语） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
You can not imagine the difficulty they had
____ the problem. It isn’t ____ easy.
|
A．to solve; so
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B．solved; so
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C．solving; that
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D．solved; that
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