Mình trả lời đáp án thôi nhé
9. Yen wrote this letter.
10. Thao received this letter.
11. Because Yen have a birthday party and want to invite Thao
12. The birthday party is at her home.
13. The birthday party is on January 23rd at 6 p.m.
14. Most of our classmate have been invited to the party.
15. There will be singing, dancing and some interesting games with many gifts fot the winner.
16. There will be a lot of cakes, jams, candies, and some special foods.
