问题
选择题
American International Group was the largest insurance company in the US_______it, suddenly closed down in September 2008.
A．after
B．since
C．as
D．before
答案
答案：D
搜题请搜索小程序“爱下问搜题”
American International Group was the largest insurance company in the US_______it, suddenly closed down in September 2008.
A．after
B．since
C．as
D．before
答案：D