问题补充:
Family fights are the things I feel upset.
A. about which
B. of which
C. in which
D. on which
答案:
(答案→)A. about which
B. of which
C. in which
D. on which
解析:考查定语从句:介词+which引导定语从句,修饰the things,介词的选择是根据后面的be upset的搭配,用about,对…难过。句意:家庭争吵是我感到难过的事情。选A。