Answer:
1. If I had known, I <u>would have done</u> things differently. (do)
2. If I could be any animal, I <u>would be</u> a giraffe. (be)
3. I <u>would go</u> to the police if someone stole my car. (go)
4. If he is on time, I <u>will eat</u> my hat. (eat)
5. If I <u>get</u> the promotion, I'll have a celebration dinner. (get)
6. What would you do if you <u>won</u>
a million euros? (win)
7. If you don't clean your room right now, I <u>will ground</u> you for a week. (ground)
8. If I have some free time tonight, I <u>will go</u> for a walk. (go)
9. If I had missed my bus this morning, I <u>would not have met</u> that nice guy. (meet/not)
10. I <u>will go</u> shopping tomorrow if I have time. (go)
Explanation: