Before you make some coffee, you should make sure the coffee pot .
A. wiped out
B. is wiped out
C. wiped off
D. is wiped off
网友回答
A. wiped out
(答案→)B. is wiped out
C. wiped off
D. is wiped off
解析：语态及短语辨析。Wipe out消灭，擦净；wipe off除去，洗刷。句意：当你泡咖啡时，你应该确信咖啡壶被擦干净了，咖啡壶是动作对象，故用被动语态。选B。