2. 外语
  3. You don’t know about the difficulty I had______the work then at all.

You don’t know about the difficulty I had______the work then at all.

admin2011-01-14  45
问题 You don’t know about the difficulty I had______the work then at all.
选项 A、done
B、to do
C、for doing
D、in doing
答案D
解析
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成人本科学位英语

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