Question

We’ve just installed two air-conditioners made in Shanghai in our apartment, ________ should make great differences in our life next summer．

1. A.
   which
2. B.
   what
3. C.
   that
4. D.
   they

Answer 1

A
解析：

试题分析：本题考查关系代词的用法。详细
解答：这是一个非限制性定语从句，此处缺少一个关系代词；由于该非限制性定语从句先行词是air-conditioners，所以关系代词应用which。