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He must have been ill,____?Yes ,otherwise he wouldnt be abse

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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!