2. 外语
  3. I do not remember ________________ this book before.

I do not remember ________________ this book before.

admin2014-03-21  60
问题 I do not remember ________________ this book before.
选项 A、reading
B、having ever read
C、to have ever read
D、to read
答案A
解析
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专业英语四级

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