VI. Choose the right verb and supply the correct form of the verbs to complete these sentences.
happen Reduce save suffer Cause
throw Take be change See
1. If we use less vehicles, we _________ the amount of carbon dioxide into the air.
2. If you __________ the president, what you do to prevent air pollution.
3. If there were no fresh water left, what ____?
4. If people (not) ________________ rubbish in the street, it would look better.
5. if there wasn’t so much light in the cities at night, we __________ the starts more clearly.
6. If the water is contaminated, people ________ from many diseases.
7. If chemicals from factories are dumped into rivers and lakes, they ______ water pollution.
8. If people want to protect their planet, they should ________ their habit of using plastic bag for convenience.
9. If we recycle paper, we ________ 1000 trees a day.
10. If people were more aware of the negative consequences of pollution, they might ______ actions to prevent it.
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Sinh Học lớp 12
