问题
选择题
Tom kept quiet about the accident ______ lose his job.
A．so not as to
B．so as not to
C．so as to not
D．not so as to
答案
答案：B
题目分析：不定式的否定形式就是在不定式的前面直接加not，故选B。句意：Tom对这件意外事故很冷静以便不丢失他的工作。
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