1/ If you are kind to me, I (be) will be good to you.
2/ He (come) would come if you waited.
3/ If you (ring) rang the bell, the servant would come.
4/ If I had known that the baby was hungry, I (feed) would have felt him.
5/ If it (not, rain) wasn't rain a lot, the rice crop wouln’ t grow.
6/...