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?

Ⅳ. 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 your clothes before we leave for the trip.
2. The is on the second floor of the house.
3. Can you help me these books by their writers?
4. My is very comfortable with a big window.
5. We like to sit on the and enjoy the night view.
6. I want to my friends to my birthday party.
7. The is where we watch TV and relax.
8. We are waiting for the of the guests.
9. They haven't arrived at the party .
10. Please some sugar to your tea if you would like it to be sweet.
11. Would you like a with your coffee?
12. Can I your pen?
13. We need to a surprise party for her birthday.
14. He the time he spends with his family.
15. They went on a for the lost dog in the park.
16. Wait here I come back.
17. We watched a great last night.
18. The phone went after it fell into the water.
19. Our organizes a charity event every year.
20. Please throw the in the bin.

Ⅰ. 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