our next meeting _____on 1st December.A.has been held B.will hold C.is to be held D.is holding

问题描述:

our next meeting _____on 1st December.A.has been held B.will hold C.is to be held D.is holding
D.为什么不对?
D.is holding,也表示将要做某事,为什么不对呢?

要用的话也要用is being held(其实这个不能表示将来时的) ,因为要用被动,C就是被动is 不就代表be了吗?那不是的,进行时态的被动语态是be being done,因为is是谓语的be, 而being是表示进行时态的