问题
选择题
It was decades ago ________ I was in my teens ________ the Chinese government decided to reform the social economic system.
A．when; when
B．that; which
C．when; that
D．before; that
答案
答案：C
when引导时间状语从句，二十年以前当我十几岁的时候。It was…that是强调句型。