问题
选择题
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
答案
答案：D
考查主谓一致和时态。Either…or连接并列主语时，谓语动词用就近原则，headmaster是单数，所以系动词用is，排除B,C；根据句子，应该用将来时态，所以选D。