题目内容
— ___________ there any students in the classroom?
— No, there aren't. But there _____________ some half an hour ago.
— No, there aren't. But there _____________ some half an hour ago.
[ ]
A. Are, were
B. were, are
C. are, are
D. were, were
B. were, are
C. are, are
D. were, were
A
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