Last week, I bought an interesting story book, is very beautiful.
A. which cover
B. the cover of which
C. its cover
D. the cover of whose
网友回答
A. which cover
(答案→)B. the cover of which
C. its cover
D. the cover of whose
解析：考查定语从句。句中先行词为story book ，the cover of which = whose cover。句意：上个周，我买了一本有趣的故事书，它的封面非常漂亮。