II. Change these words into past form.(Đổi về dạng quá khứ)
1. visit:....................................... 9.order :..........................
2. work: .........................................10. Read:.............................
3. Find:........................................ 11. Hear:........................................
4. Meet:...................................... 12. Can..........................................
5. Think................................... 13. Lose:........................................
6. Is/am: ..................................14. Stand:......................................
7. Play: ..................................15.Walk........................................
8. Watch.................................. 16.exchange ..................................
nhanh=tick
1. visited
2. worked
3. found
4. met
5. thought
6. was/were
7. played
8. watched
9. oredered
10. read
11. heard
12. could
13. lost
14. stood
15. walked
16. exchanged
