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