问题
选择题
Cathy had quit her job when her son was born _______ she could stay home and raise her family.
A．now that
B．as if
C．only if
D．so that
答案
答案：D
题目分析：A.now that既然；B.as if好像；C.only if只要；D.so that以便。这里是so that引导的目的状语从句。句意：当Cathy的儿子出生的时候，她就放弃了自己的工作，以便呆在家里照顾家人。根据句意故选D。