单项选择题

Would you like a cup of coffee first ____________ shall we get down to business right now

A．then
B．when
C．or
D．otherwise
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单项选择题
A．beforeB．previousC．agoD．former
A．before
B．previous
C．ago
D．former
单项选择题
A．in advanceB．ahead ofC．in front ofD．in front
A．in advance
B．ahead of
C．in front of
D．in front
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