1. Swallows usually stay in the south in winter and fly to n_______ countries in summer.
2. Don't throw l_______ into the river. It may waste water.
3. There are many t_______ visiting the places of interest in Beijing every year.
4. "Don't shoot any birds," he said to the hunter a_______.
5. Millie was so c_______ that she forgot to bring her homework yesterday.
6. Our school is a m_______ one. Boys and girls have lessons together.
7. After having Home Economics, I know how to cook healthy and t_______ meals.
8. We usually have PE t________ a week.
9. You will find it u________ to learn English well after you leave school.
10. English is one of my favorite s_______.

A: Oh, Millie. It's dark in your room. Please 1______ 2______ the light.
B: All right. Oh, 3______ you, Sandy. Please sit down.
A: Thank you very much, Mike. I don't have a knife. Can I 4______ 5______?
B: Certainly. 6______ it is. What do you use my knife to do?
A: I want to make a 7______ 8______ . Tomorrow is 9______ .
B: How do you celebrate this 10______?
A: Have parties.