Mary kept quiet about the accident ________ lose her job．

Mary kept quiet about the accident ________ lose her job．

A.so not as to

B.so as not to

C.so as to not

D.not so as to

答案及解析： B

句意为：“玛丽对这件事故保持缄默，以防失去工作。”so as to…“为了……”。否定形式是so as not to…。