Mostplantsneedsunlightjust____theyneedwaterA.because.B.when.C.as.D.for答案...
Mostplantsneedsunlightjust____theyneedwater
A.because.B.when.C.as.D.for
答案是C,为什么?ACD用法上有什么区别?还有B也解释得通啊