1. If they (be) you, they (not do) it.
2. If the plane (arrive) late, I (call) you.
3. He (ring) the bell if he (be) here.
4. If I (paint) so well, I (try) to exhibit my paintings at an art gallery.
5. You (concentrate) a bit more if you (not be) so nervous.
6. If Paul (not go) to the gym, he (not be) so well-built.
7. If I (win) the lottery, I (buy) so many things.
8. We (visit) him if we (have) time.
9. If you (leave) early, we (not see) each other.
10. You (be) healthier if you (eat) better.