Homework - Progress with my kittens

These are kittens (pictures below) there was originally 6 but two of them passed away one was a still born and the other one was the runt of the litter and we didn't notice that it wasn't drinking and then one morning it passed away. So now there 4 and I love all of them dearly I wish I didn't have to give them away but I do because I already have two cats.