（急!）：It isn't easy for him to work out this problem.I thought.(合并为一句)
It isn't easy for him to work out this problem.I thought.(合并为一句)I ___ ___ it ___ easy for him to work out this problem.
人气：304 ℃ 时间：2019-10-19 09:23:08
解答
I thought that it wasn't easy for him to work out this problem.
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