问题
选择题
I would have dropped in on him, but I ____ his address.
A．didn’t know
B．hadn’t know
C．don’t know
D．wouldn’t know
答案
答案：A
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I would have dropped in on him, but I ____ his address.
A．didn’t know
B．hadn’t know
C．don’t know
D．wouldn’t know
答案：A