1, Huong doesn't tidy the house.Her mum feels angry 

If huong 

2 the air is polluted . people get can diseases

the more

3 the polluted water makes a lot of underwater creatures die 

 a lot of underwater creatures die due 

4 it is necessary for us to use water carefully 

we need 

5 air pollution has reduced dramatically over the last few years

there has been a 

Nêu đặc điểm khác nhau về địa hình giữa hải đảo và đất liền của Đông Á 

when she heard the news , she broke down 

on .....

we"ve run out of tea

there ......