1. life ⇒ lives (?)

2. has known ⇒ knew

3. sickness ⇒ sick 

4. planted ⇒ has planted

5. had ⇒ has had    

6. paints ⇒ has painted 

7. didn't collect ⇒ haven't collected

8. have met ⇒ met

9. has bought ⇒ bought

10. was ⇒ has been

Bạn tham khảo!
1. They want to provide necessary (life) skills with street children in their community.

⇒ Chọn life
2. She (has known) how to (look) after (sickness) children in the right way (so) far.
⇒ Chọn has known
3. We often (volunteer) at the (nursing) home (to) help ( elderly) in our free time.
⇒ Chọn sickness
4. He (has attended) a (green project) and (planted) a lot of trees ( in their community) two months ago.
⇒ Chọn planed
5. She (had) time to play (chess) with her brother yesterday morning (because) shecleaned the (dirty beach) with her green club.
⇒ Chọn had
6. He (has repaired) and (paints) his son's (old) bicycle (for) two hours.
⇒ Chọn paints
7. They (didn't collected) enough (books) and clothes (for) their volunteer programme yet.
⇒ Chọn didn't collected
8. They (haven't seen) Deach other (since) September (when) they ( have met) at Mary's party.
⇒ Chọn have met
9. Peter (has bought) a (new MP3 player) yesterday but I (haven't seen) it (yet).
⇒ Chọn has bought
10. (The) hockey player (hit) his head on Friday and he (was) in hospital (since then).
⇒ Chọn was
@FbBinhne2k88