—Do I need to give a tip if I eat at a fast food restaurant in the United States?—Yes , it

—Do I need to give a tip if I eat at a fast food restaurant in the United States?
—Yes , it’s a common to tip waiters in a restaurant.
A. sense
B. custom
C. method
D. practice

A. senseB. customC. method(答案→)D. practice解析：名词词义辨析。A感觉；知觉；B风俗，习惯；C方法；D做法，锻炼；句意：—如果我在美国的快餐店里吃饭，我需要给小费吗？—是的。给餐厅服务员小费这是一个常见的做法。根据句意说明D正确。

这个答案应该是对的