Mikeoftensaysinpublicthatheusedtobechairmanoftheinstit...

问题详情：

 Mike often says in public that he used to be chairman of the institute, but in fact he____ .

   A. doesn’t               B. isn’t           C. wasn’t                   D. didn’t

【回答】

C

知识点：动词时态与语态

题型：选择题