Необходимо написать ответное письмо...We are doing research at school about languages

Необходимо написать ответное письмо...We are doing research at school about languages that our friends study. Here are the questions that are included in our survey. Could you answer them please? When did you start learning English? How long have you been learning it? What were reasons for choosing english to study? Do you think English will be useful for your future cereer: Write socn I'll be grateful for your answers.
Andrew