问题
选择题
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
答案
答案：B
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。
