―HaveyoubeentotheGreatWall?―Perhapsnotinmymemory.

問題詳情：

― 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 ever                 

C. If once                                               D. If not

【回答】

知識點：交際用語

題型：選擇題