I was giving a talk to a large group of people, the same talk I()to half a dozen other groups before.A、was givingB、am givingC、had givenD、have given
题目内容(请给出正确答案)
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