I often think of the hours I stayed with you has had a great effect on my life.A. that;

问题补充：

I often think of the hours I stayed with you, has had a great effect on my life.

A. that; which

B. which; who

C. which; that

D. when; which

答案：

A. that; which

B. which; who

C. which; that

(答案→)D. when; which

解析：考查定语从句。本题第一空定语从句的先行词是the hours，后面的定语从句中的句子结构很完整，故使用关系副词when；第二空是一个非限制性定语从句，which指代前面一句话的内容，在后面句中做主语。句意：我经常会想起和你一起待过的时间，这对我的生活有很大的影响。故D正确。