Generally speaking, in the United States ____ 15-percent tip is normal for ____ most restaurants.
A great person is always putting others' interests ______ his own.
It saves time in the kitchen to have things you use a lot ______ easy reach.
Children need friends ______ their own age to play with.
We do not think the twelfth fiveyear plan for our city is practical ________ recent developments.
The invention of artificial hearts marked a turning point in the battle ________ heart disease.