Put the verbs into the correct form.

1. If you take public transportation, you …………………………… (help) to reduce pollution.

2. If we had gone by subway, we ………………………. (avoid) the traffic jams.

3. If we …………………………………. (not change) our habits, pollution will get worse.

4. Companies …………………………… (not transport) goods so far if people bought more local

products.

5. If air pollution gets worse, we ……………………………… (not be) able to breathe.

6. It …………………………… (be) better if you had taken your bottles to the recycling bin.

7. People ……………………………….. (use) fewer plastic bags if they had to pay for them.

Put the verbs into the correct form.