Mr.Blackusedtobeaworker,?Yes,h-优题课

题文

--Mr.Black used to be a worker,_________?
--Yes,he_______. Now he is a policeman.

A．did he;did	B．didn’t he;did
C．did he; didn’t	D．didn’t he; didn’t

科目英语题型单选题难度中等

知识点：疑问词组

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