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.