Question

Tom kept quiet about the accident ________ lose his job．

[　　]

A．so not as to

B．so as not to

C．not in order to

D．not so as to

Answer 1

答案：B
解析：

so as to的否定式为so as not to, in order to的否定式为in order not to; in order to可以置于句首，so as to不可以。