Tom kept quiet about the accident lose the 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：考查不定式的否定式。固定搭配：so as to do sth为了做某事；注意不定式的否定式是在不定式符号前面直接加not。句意：为了不失去这份工作，Tom对于这个事故保持沉默。故B正确。