问题补充:
Tom kept silent about the accident lose his job.
A. so not as to
B. in order not to
C. in order to not
D. not so as to
答案:
A. so not as to
(答案→)B. in order not to
C. in order to not
D. not so as to
解析:考查固定词组,in order to意思“为了”,so as to意思“为了”,其否定式都是把not放在to的前面,in order to既可以放在句首又可以放在句中;so as to只放在句中,所以选B