—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.

Every time _______ I come across difficulties, I will turn to my parents for help.

China has got a good ________ for fighting against the flu with its careful and smooth organization.

The________of life is being________ what I am or what I have.

The old man gave ______ on behalf of an accused person.