Children who are not active or ________ diet is high in fat will gain weight quickly.
——Hi, John. Are you busy?——
The boss of the company is trying to create an easy atmosphere ______ his employees enjoy their work.
See, your computer has broken down again! It doesn'tsense to buy the cheapest brand of computer just to save a few dollars.
I wish I ______ at my sister’s wedding last Tuesday, but I was on a business trip in New York then.
We need to get to the root of the problem______ we can solve it.