I only know we will have a League meeting,but I have no idea when _________ it．

题目

I only know we will have a League meeting,but I have no idea when _________ it．
A．shall we have B．will we have C．to have D．having
说下选什么,为啥这么选,四个选项有什么区别,为什么别的不正确.

答案

C 这个是陈述句,所以应该用正常语序 When we will/shall have it
但是没有这个选项,而when to do sth.也可以表示“什么时间做某事”,所以选择C.