问题补充:
Many people tend to buy things from big store, they believe the qualities are good.
A. at which
B. of which
C. which
D. where
答案:
A. at which
(答案→)B. of which
C. which
D. where
解析:答案:B。考查定语从句。句意:很多人期望从大商场买东西,他们认为那里的东西质量好。The qualities of things from big stores are good,所以选of which。