while&as

Sports build the body ___ reading builds the mind.
A.while B.when C.as D.for

A is right.WHAT ABOUT" C"?

while&as 比较while, when, as when ,while和as when while as 区别 as和 while 区别 as when while 的区别 用when while as填空 when ， while， as的区别 as,when,while,的用法 while和as的区别