I shall remember the days we worked together.A. whenB. whichC. thatD. of which

问题补充：

I shall remember the days we worked together.

A. when

B. which

C. that

D. of which

答案：

(答案→)A. when

B. which

C. that

D. of which

解析：这里填入一个副词when来引起一个定语从句,修饰先行词days.