bài 1 

1 i have learnt

2 has lived

3 has moved

4 has worked

5 have you seen

6 hasn't finished

7 have ever eaten

8 hasn't sent

9 hasn't met

10 has tought

Mình làm đc bài 1 thôi

1. have learnt

2. has lived

3. has moved

4. has worked

5. have you seen...

6. haven't finish

7. ate

8. sent

9. didn't meet

10. has bought

bài 2:

Past simle:  yesterday, ago, last week, yesterday morning.

Present simle: always, usually, ofen, recently, sometimes, everyday, occasionally, monthly, weekly, yearly, lately. 

Present perfect: for, since, just, in 2010, yet, never, so far, ever.

Bài 3:

1. do-did-done

2. go-went-gone

3. learn-learnt-learnt

4. buy-bought-bought

5. send-sent-sent

6. sell-sold-sold

7. tell-told-told

8. speak-spoke-spoken

9. say-said-said

10. eat-ate-eaten

11. meet-met-met

12. see-saw-seen

13. make-made-made

14. build-built-built

#ctlhn