II- chia dang dung cua tu trong ngoac
1, we often take part in many ..clutural... activities at school ( culture)
2, the internet has helped students study more ..effectively...( effective)
3, there are many .celebrations.. in viet nam every years ( celebrate)
4, solar enery dose not cause ...pollution..( pollute)
5, Forestation....... is one of big proplems in the world ( forest)

1, i can't go out because it IS RAINING and i DON'T HAVE a rain coat
2, she SAID she would phone me this morning , but it's now 12.30 and she HASN'T PHONED ... yet
3, laura wishes that she DIDN'T LIVE in a small flat
4, our school WILL BE REPAIRED in some years
II- chia dang dung cua tu trong ngoac
1, we often take part in many CULTURAL activities at school ( culture)
2, the internet has helped students study more ..EFFECTIVELY..
3, there are many ..CELEBRATIONS . in viet nam every years ( celebrate)
4, solar enery dose not cause ...POLLUTION..( pollute)
5, ..DEFORESTATION..... is one of big proplems in the world ( forest)