Do you remember a certain occasion ________ you were in trouble and at that moment I gave you a hand.
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.
This urban special school always accepts hearingimpaired students, ________ their educational level and background.