1) If I have this rare book, I will (или shall) lend it to you with pleasure.
2) The dish will be much tastier if she learns to cook better.
3) He will forget to phone you if I don't remind him to do that.
4) Your body will become much stronger if you take cold bath regularly.
5) If she is more courageous, she won't be afraid.
6) If the fishermen are less patients, they won't catch so much fish.
7) If he puts the ice-cream into the fridge, it won't melt.
8) If I know the result, I will (или shall) call them.
9) She will bring her book if you let her know.
10) If it snows, the children will play snowballs.