—Tommy, don't make a noise! If you have any questions, please your hands. —Sorry, Mr. Smith. I won't do it again.
—_________is very interesting to swim in the river in summer,but it’s dangerous.
Vegetables are good our health, so we should eat them every day.
— do you go to the movies? —Hardly ever.
If you eat chocolate, maybe you’ll be fatter(更胖的).
— You look tired, you should have a good rest for _______ days.— That sounds good.