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
网友回答
A. so not as to
(答案→)B. so as not to
C. so as to not
D. not so as to
解析：考查目的状语：句意：为了不丢掉工作，汤姆对这件事保持沉默。So as to do为了做…否定是so as not to do为了不做…，选B。