问题
选择题
Because of the heavy traffic，it was already time for lunch break ________ she got to her office.(2010·四川)
A．since
B．that
C．when
D．until
答案
答案：C
C [句意：因为交通堵塞，当她到达办公室时已经是午休的时间了。故此处应为when引导时间状语从句。]
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