6 класс! Решите номера 4 и !

if you don't eat now , you will be hungry latershe will be sad if he leavesif you leave ice in the sun , it meltsif we go to the show , we will have a lot of fanif you mix black and white , you will get grey.if it rains tomorrow,we won't go to the parkif you heat water it boilsif you freeze the water it turns to iceif I need help , I will phone youif we pay for dinner, you'll pay for lunch.