Помогите написать письмо СРОЧНО!!!!!!!

Yesterday, when I was busy doing my homework my Mum asked me to look after my younger sister whos five. I really like her, shes so funny but she talks all the time and asks 100 questions a minute! Do you have brothers or sisters(or maybe cousins)? Do you spend much time together? Would you like to be the only child in the family?On before I forget I have read ready the last book about Harry Potter.

Какое письмо ...тема какая ?