He must have been ill,____?Yes ,otherwise he wouldnt be absent from the party yesterday.

问题描述:

He must have been ill,____?Yes ,otherwise he wouldnt be absent from the party yesterday.
A.isn't he B.wasnt he C.can't he D.mustn't he

B
解析:He must have been ill,_wasn't he___?Yes ,otherwise he wouldnt be absent from the party yesterday.
他一定是病了,不是吗?是的,否则他不会在昨天的party上缺席.
(因为是昨天,所以用过去时.)
百分百正确!