题目

------Tom, I got a strange call this morning, saying I had won an expensive car, which puzzled me.-------- ___________A. Congratulations.                              B. You are a lucky dog. C. Forget it. It’s too expensive.          D. Perhaps it’s a trick. 答案：DWe must keep all the things in the room ________. [　　] A．clean B．cleanly C．cleans D．cleaned