— Have you been to the Great Wall? —Perhaps not in my memory. it might have been during

问题补充：

— Have you been to the Great Wall?

—Perhaps not in my memory. , it might have been during my early childhood.

A. If any

B. If so

C. If ever

D. If not

答案：

A. If any

B. If so

(答案→)C. If ever

D. If not

解析：考查省略。句意：你去过长城吗?也许不记得了。如果曾经去过，可能是在我童年的时候。If ever 如果曾经，所以选C。