If you are walking away from a clock tower you will hear the ticking of the clock fade to

学历类 公共英语 已帮助 人

If you are walking away from a clock tower, you will hear the ticking of the clock fade to a point______ it cannot be heard.

A.which

B.what

C.where

D.how

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗