V- Use the correct verb form: 1. Students ( be)............. aware of protecting the environment if teachers teach environmental issues at school. 2. When light pollution (happen)..................., animals will change their behaviour patterns. 3. The levels of radioactive pollution (decrease) ........................ if we switch from nuclear power to renewable energy sources. 4. If the water temperature (increase)........................., some aquatic creatures will be unable to reproduce. 5. People (get) .................... more disease if the water is contaminated. 6. If people (not rubbish) .......................in the street, it would look attractive. 7. If there (be not)............... so many billboards in our city, people could enjoy the view. 8. If there wasn't so much light in the city at night, we (see) ............the stars clearly. 9. If we didn't turn on the heater all the time, we (not have) to pay three million dong for electricity a month. 10. If the karaoke bar ( not make) so much noise almost every night, the residents wouldn't complain to its owner.