—Where have you been recently?　　　　—I in Hangzhou on business for a week last month.A. hav

问题补充：

—Where have you been recently?

—I in Hangzhou on business for a week last month.

A. have been

B. was

C. had been

D. had gone

答案：

A. have been

(答案→)B. was

C. had been

D. had gone

解析：回答对方询问，说明自己曾做过的事情，用一般过去时。