I have searched for the book but couldn’t find it.A. thoroughly B. deeplyC. at easeD. com

问题补充：

I have searched for the book but couldn’t find it.

A. thoroughly

B. deeply

C. at ease

D. comfortably

答案：

(答案→)A. thoroughly

B. deeply

C. at ease

D. comfortably

解析： 词义辨析. A.彻底地;完全地 B.深深地 C.自由自在的 D. 舒服的;安乐的.句意:我彻底地搜查了这本书,但是我不能找到它.