14.Either you or the headmaster_______ the prizes to these gifted students at the meeting.A.is handing out B.are to hand out C.are handing out D.is to hand out为何用不定时,而不用分词。

问题描述:

14.Either you or the headmaster_______ the prizes to these gifted students at the meeting.
A.is handing out B.are to hand out C.are handing out D.is to hand out
为何用不定时,而不用分词。

D either ..or..选择疑问句当单数