I. Write the past simple and past participle of these verbs:

1. be - was/were - been

2. go - went - gone

3. do - did - done

4. put - put - put

5. know - knew - known

6. study - studied - studied

7. work - worked - worked

8. read - read - read (* "read" ở past simple và past participle đọc giống từ "red").

9. take - took - taken

10. think - thought - thought

11. see - saw - seen

12. eat - ate - eaten

13. visit - visited - visited

14. sing - sang - sung

15. run - ran - run

16. buy - bought - bought

17. come - came - come

18. get - got - got/gotten

19. break - broke - broken

20. meet - met - met

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