— Beijing is well worth visiting. I there with my parents during the holidays.— I agree.

问题补充：

— Beijing is well worth visiting. I there with my parents during the holidays.

— I agree. I have been there twice.

A. went

B. have gone

C. have been

D. would go

答案：

(答案→)A. went

B. have gone

C. have been

D. would go

解析：考查时态：句意：北京是值得参观的。在在假期和父母去那里度假了。--我同意，我去过那里两次。因为是during the holidays发生的事情，用一般过去时，选A。