The concert many foreign students were invited was a feast for the eyes.
A. for which
B. to which
C. in which
D. on which
网友回答
A. for which
(答案→)B. to which
C. in which
D. on which
解析：考察主语从句.句意:许多外国学生被邀请来参加的这场音乐会令人大饱眼福. many foreign students were invited修饰主语The concert,invite 一般和to搭配使用,意思为邀请某人去哪儿,故选B.