was last night I read about the history of English.
A. This ,when
B. It ,since
C. It .that
D. It ,before
网友回答
A. This ,when
B. It ,since
(答案→)C. It .that
D. It ,before
解析：
这题考查强调句，强调句的结构是：It is/was+强调部分+that….如果把强调结构去掉，这句话是完整的。即：I read about the history of English last night.由此判断是强调句。句意是：我是在昨晚阅读关于英语的历史的。