you know the answer ------member two?A.of B.in C.to D.at

选择题Do you know the answer ______member two?A.of B.in C.to D.at
答：C.
Do you know the answer to question number two?
译：你知道第二个问题的答案吗?
析：此题考介词.the key/answer to a question,.问题的答案用介词to不用of,因为它们之间不是所属关系,而是对应的关系.一把钥匙开一把锁.一个答案针对一个问题.
题目有打印错误.