Put the verbs in brackets into the correct tense.

1. If I miss this bus, I ………………… (be) late for work.

2. If we ………………… (clean) the beach, it would look nicer.

3. When the sun sets, it ………………… (get) dark.

4. If I were you, I ………………… (donate) my old clothes to charity.

5. If the polar ice melts, low-lying lands ………………… (flood).

6. Unless we stop global warming, crops ………………… (fail).

7. If you heat water, it ………………… (boil).

8. If we don't turn off the lights, we ………………… (waste) energy.

9. If I were you, I ………………… (recycle) your old newspapers; it’s easy.

10. If everyone ………………… (use) public transport, there would be less pollution.

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