问题补充:
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:
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。