If you are students, you will get a discount on books

Mr.Jones has taught at this school since he graduated in 1980

My can you do in your school minimize pollution?

My father stopped smoking a year ago

I think that we should clear up the trash on the ground before leaving

You will punish if you litter on the school yard

I suggest openning the door and Windows to save energy

If people use public transport,there will be less pollution

The Johnsons has lived in thật house for 20 years

We must stop using dynamite for fish

 are 

has taught 

minimize 

 smoking 

 clear 

 punish 

openning 

 use 

 has lived 

 using 

         Cho mik câu trả lời hay nhất nhé Mik cảm ơn trước !!Thanks!