Jim , my e-friend , found it hard ____ Chinese well . A.to learn B. learning C. learns D. learned

题目

Jim , my e-friend , found it hard ____ Chinese well . A.to learn B. learning C. learns D. learned
为什么选A,有什么固定的用法吗?请详解,谢谢.

答案

有固定的用法
find it adj.to do sth.是固定搭配
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