Помогите составить предложения на английском со словами old — young…

My Granny is old. She is 78 years oild.Mary is young — she is 7.Sam isn't fat, he is thin.This rose is beautiful.She has an ugly tongue.Peter is tall and Lilly is short.A "five" is a good mark and a "two" is a bad mark.The lion is strong and hear is week.