I don't know the difficult() you have studied English

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/12 04:44:23

I don't know the difficult() you have studied English
to which/at which/of which/with which
这题有点怪啊.我以为是have difficulty in
可他又是studied和difficult

with which.
应该是difficulty,印错了而已.
i don't know the difficulty with which you have studied English.
have studied就是一个现在完成时.
with which,which指代the difficulty.

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