【小试牛刀】用 can 或 could 的适当形式填空。
1. —Can you play the guitar, Mark?
—Yes，I ________.
2. —Sam，__________ I join you in the community service?
—Of course you ________.
3. —Could you please sweep the floor, Daming?
—Sorry，I ________. I'm busy cooking.
4. ________ you swim two years ago?

1. can 2. can/could; can 3. can't 4. Could

Ⅰ. 根据句意及所给提示完成句子。
1. Please ________ (打包) your clothes before we leave for the trip.
2. The ________ (浴室) is on the second floor of the house.
3. Can you help me ________ (整理) these books by their writers?
4. My ________ (卧室) is very comfortable with a big window.
5. We like to sit on the ________ (阳台) and enjoy the night view.
6. I want to ________ (邀请) my friends to my birthday party.
7. The ________ (客厅) is where we watch TV and relax.
8. We are waiting for the ________ (arrive) of the guests.
9. They haven't arrived at the party ________ (还).
10. Please ________ (添加) some sugar to your tea if you would like it to be sweet.
11. Would you like a ________ (饼干) with your coffee?
12. Can I ________ (借) your pen?
13. We need to ________ (策划) a surprise party for her birthday.
14. He ________ (treasure) the time he spends with his family.
15. They went on a ________ (搜寻) for the lost dog in the park.
16. Wait here ________ (直到) I come back.
17. We watched a great ________ (电影) last night.
18. The phone went ________ (不运行的) after it fell into the water.
19. Our ________ (社区) organizes a charity event every year.
20. Please throw the ________ (垃圾) in the bin.

1. pack/pack up 2. bathroom 3. sort
4. bedroom 5. balcony 6. invite 7. living room
8. arrival 9. yet 10. add 11. biscuit
12. borrow 13. plan 14. treasures 15. hunt
16. until 17. movie/film 18. dead
19. community 20. rubbish