—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 waiter in a restaurant.

Don’t leave matches or cigarettes on the table within      of little children. 

Don't get yourself into ___ of drinking.

The British government often says that providing children with      to the information superhighway is of great importance.

We paid ______ cash in the hope that we can get 15% ______.