It was just a week ago an earthquake happened in Taiwan.
A. when
B. where
C. that
D. /
网友回答
A. when
B. where
(答案→)C. that
D. /
解析：考查强调句：句意：就是在一周前，在台湾发生了地震。这是强调句：结构是：It was+强调部分+that+其余部分，判断是否是强调句的方法是去掉强调结构，如果这句话仍然成立，就是强调句，这句话去掉强调结构是：An earthquake happened in Taiwan just a week ago. 选C。