We found________ the problem.A it is difficult to solve B it difficult to answer

We found________ the problem.A it is difficult to solve B it difficult to answer
A 应该选择哪一个呢?
英语人气:890 ℃时间:2020-04-03 01:10:30
优质解答
答案有问题.选B的话把is去掉.选A的话把answer改为solve.
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