This is the second time that you the Summer Palace.A. visitedB. have visitedC. had visite

问题补充：

This is the second time that you the Summer Palace.

A. visited

B. have visited

C. had visited

D. are visiting

答案：

A. visited

(答案→)B. have visited

C. had visited

D. are visiting

解析：根据主句时态是一般现在时可知，从句用现在完成时，故选B。句意：这是我第二次参观颐和园。