1. you … recycle aluminium cans. 2. you …adopt any animal in our zoo. 3. people … throw away litter in the park. 4. humans … cut down forest to clean places for building. 5. we… reduce our oil consumption. 6. people … know more about genetically modified products. 7. authorities … organize environmental campaign

1 can/should
2 can't
3 shouln't
4 have to
5 must/ should
6 should
7should

 

They ran in the street They don't ran in the street. Do the ran in the street?
They ran in the street. They didn't ran in the street. Did they ran in the street?
They are running in the street. They are not running in the street.Are They running in the street.
She listens to the radio. She does not listen to the radio. Does she listen to the radio?
She listened to the radio. she didn't listen to the radio. Did she listen to the radio?
She is listening to the radio. She is not listening to the radio. IS she listening to the radio?

preent simple:

1.They run on the street.

Do they run on the street?

They don't run on the street.

2.She listenes to the radio.

Does she listen to the radio?

She doesn't listen to the radio.

 

present continuos:

1.They are running on the street.

Are they running on the street?

They are not running on the street.

2.She is listening to the radio.

Is she listening to the radio?

She is not listening to the radio.

 

past simple:

1.They ran run on the street.

Did they run on the street?

They didn't  run on the street.

2.She listened to the radio.

Did she to the radio.

She didn't to the radio.