I.
1. go -> went -> gone : Đi
2. do -> did -> done: Làm
3. be -> was/were -> been : là
4. give -> gave -> givven : đưa cho
5. take -> took -> took : lấy
6. see -> saw -> seen : nhìn thấy 
7. cut -> cut -> cut : cắt
8. send -> sent -> sent : gửi
9. leave -> left -> left : rời đi
10. teach -> taught -> taught : dạy học 
11. buy -> bought -> bought : mua
12. think -> thought -> thought : nghĩ
13. have -> had -> had : có
14. eat -> ate -> eaten : ăn
15. drink -> drank -> drunk : uống
16. make -> made -> made : làm
Bài 2 mik chưa có đáp án bạn thông cảm !