单项选择题

Hello! I ______ you ______ in London. How long have you been here

A．don't know, were
B．hadn't know, are
C．haven't know, are
D．didn't know, were
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单项选择题
Shirley ______ a book about China last year but I don't know whether she has finished it.
A．has written
B．wrote
C．had written
D．was writing
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