This is the only foreign film I have seen this month.A. thatB. whenC. whichD. of which

问题补充：

This is the only foreign film I have seen this month.

A. that

B. when

C. which

D. of which

答案：

(答案→)A. that

B. when

C. which

D. of which

解析：这是一个定语从句，先行词film前有only修饰，所以只能用that。