英语高手们I need your help!Thank you

问题描述:

英语高手们I need your help!Thank you
It is no longer a question that_________man can land on the moon.
A.which B.that
C.whether D what
为什么不是 C呢
对不起,打错了,题目中的that去掉

你语意都没看懂吧,