—Do I need to give a tip if I eat at a fast food restaurant in the United States?
—Yes , it’s a mon to tip waiters in a restaurant.
A. sense
B. custom
C. method
D. practice
网友回答
A. sense
B. custom
C. method
(答案→)D. practice
解析：名词辨析。A感觉，知觉；B风俗；C方法；D实践，做法；句意：在餐厅里给服务员小费是常见的做法。