Last week I bought an interesting story book is very beautiful.A. which cover.B. the c

问题补充：

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.

答案：

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。