the show may begin at any moment.it ()already.为什么要写may have begun.（）you ()the classroom?yes,we ()it

题目

the show may begin at any moment.it ()already.为什么要写may have begun.（）you ()the classroom?yes,we ()it just now,为什么要填have cleeanded did,第一个空能不能填do,这里面的Have第一个空是做动词用吗?

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