It’s nice to see you again. What since we last met?A. have you doneB. had you doneC. have

问题补充：

It’s nice to see you again. What since we last met?

A. have you done

B. had you done

C. have you been doing

D. did you do

答案：

A. have you done

B. had you done

(答案→)C. have you been doing

D. did you do

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