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：句意：上个星期，我买了本有趣的故事书，书的封面很漂亮。定语从句中cover缺少定语，可以用whose修饰cover，或用the cover of which还有of which the cover，选B。