We still remember onceround the famous tower when we were young.A. having taken B. to be t

问题补充：

We still remember onceround the famous tower when we were young.

A. having taken

B. to be taken

C. having been taken

D. to have taken

答案：

A. having taken

B. to be taken

(答案→)C. having been taken

D. to have taken

解析：考查非谓语动词。句意：我们仍旧记得小时候有一次被带去这座著名的圆塔四周。动名词作宾语表示抽象动作，如果动作发生在谓语动作之前则要用完时态的动名词。remember后接动名词表示记得某事，已做过；接不定式表示要去做某事，还没做。本题中主语是动作对象，故用完成时态，被动语态的动名词，选A。