He must be helping the old man to water the flowers,________?A.is heB.isn't heC.must beD.mustn

题目简介

He must be helping the old man to water the flowers,________?A.is heB.isn't heC.must beD.mustn

题目详情

He must be helping the old man to water the flowers,________?
A.is heB.isn't he
C.must beD.mustn't he
题型:单选题难度:中档来源:不详

答案

B
must在此表猜测,是“一定”之意,此时反意疑问句部分以must之后的动词为准,所以B项正确。

更多内容推荐