单项选择题

We had to wait for a long time to get our visas, _____

A．didn’t we
B．did we
C．hadn’t we
D．shouldn’t we
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单项选择题
When _____ why he was absent last time, he just stared at me and said nothing.
A．asked
B．to be asked
C．asking
D．was asked
单项选择题
Sorry, Mr. Brown is out, and I have no idea _____.
A．where he has been
B．where he has gone
C．he has been where
D．he has gone where
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