II. Change these words into past form. (Viết dạng quá khứ của các động từ sau)
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........................................
Watch.................................. 16.exchange ..................................
visited
2worked
3found
4met
5thought
6was/were
7played
9ordered
10read
11heard
12could
13lost
14standed
15walked
16exchanged
visited
worked
found
met
thought
was/were
played
watched
ordered
read
heard
could
lost
stood
walked
exchanged