I was giving a talk to a large group of people, the same talk I（）to half a dozen other groups before.
- A、was giving
- B、am giving
- C、had given
- D、have given
正确答案:C
答案解析:有
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专升本英语
专升本英语
I was giving a talk to a large group of people, the same talk I（）to half a dozen other groups before.
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