选择:Everyone should do ______ duty,shouldn't ______?

问题描述:

选择:Everyone should do ______ duty,shouldn't ______?
Everyone should do ______ duty,shouldn't ______?
A.his; he B.their; they C.his; they
说明原因啊,好像答案是C...为什么呢...

everyone做主语的句子反义疑问句一定要用复数they.而everyone本身是单数,所以主句里面要用his duty