Помогите написать письмо другу по e-mail на англ яз (7-10 предложений)

Dear Ann,Thank you for letter in 3may.I am really sorry I haven't written back,I wasn't at home.I was in London and visited my son.I was very happy.What do you do in your free time? Write me about you and your family.I have a big family.There are 5us: my mum,my dad, my sister, my brother.We live in Odessa.I'm waiting for your letter again.love,Maryna