Either you or the headmaster___ the prizes to these gifted students at the meeting.

题目

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 求详解

答案

D,is to hand out
临近原则：either ..or...后面的谓语与它相近的词一致.这个例子里,与the headmaster一致,所以用第三人称单数is,is to do sth 表示还没有发生的动作,而is doing 表示正在发生的事儿.这句话的意思表示给那些学生发奖的动作还没有发生,所以用D不用A.