With all the books he was interested in he left the library and went back to his dorm.A.

问题补充：

With all the books he was interested in , he left the library and went back to his dorm.

A. borrowed

B. borrowing

C. to borrow

D. borrow

答案：

(答案→)A. borrowed

B. borrowing

C. to borrow

D. borrow

解析：此题考查with复合结构：with + o. + O.c. ; 意思是：所有他感兴趣的小说都被借了，他离开图书馆回到宿舍。The books和borrow是被动关系，用过去分词做宾补，表被动。选A。