--- Whose backpack is this?--- It be Mary’s. She is looking for hers.
—_________is very interesting to swim in the river in summer,but it’s dangerous.
Vegetables are goodour health, so we should eat them every day.
—do you go to the movies? —Hardly ever.
If you eatchocolate, maybe you’ll be fatter(更胖的).
— You look tired, you should have a good rest for _______ days. —That sounds good.