--Mum, it's late. Why are you still here?--Dad hasn't come back yet. I for him.A. am waiting B. was waiting C. waited
—_________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.