2. If I found some money in the street, I ………………………. (give) it to the police. 3. If you (mix) blue and yellow colours, you (get) green. 4. If you (drop) litter, you should always pick it up. 5. If I …………………………. (not/see) Tom, I wouldn’t have known about the party. 6. If I saw/see a homeless person, I would offer them some food. 7. They will close the library if we don’t start/ didn’t start a campaign to stop them.