The trees in the school are good for our health. So please don’t ________.
Listen! There is a whisper from_______ box. Is it_______ dog?
--- Could you tell me? --- Certainly. In 20 minutes.
—Driving less, walking more is good for our health. — So I’d rather ________ an hour’s walk to work than ________ driving a car.
— You won the first prize in the Physics competition. — _________. I made several terrible mistakes.
---__________ do you have a test in school? --- Every week.