问题
选择题
The fire was finally brought under control, but not______ heavy damage had been caused.
A．before
B．after
C．since
D．until
答案
答案：A
考查时间状语从句。句意“大火最终得到了控制，但没来得及避免严重的损坏。”before可意为“没来得及做某事”。故选A。
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