单项选择题

If it ______ too much trouble, I'd love a cup of coffee.

A．hadn't been
B．isn't
C．weren't
D．may not be
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单项选择题
Nobody came to see me while I was out, ______
A．did they
B．didn't they
C．did she
D．did he
单项选择题
If reading is to accomplish anything more than ______ time, it must be active.
A．wasting
B．spending
C．passing
D．idling
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