b What style are you going to write in? How would you start/end your piece of writing?

I am going to write in an informal style, as I am writing to a friend. I would start the email with a greeting, such as 'Dear Jack,' and end with a closing, such as 'Best wishes,' or 'Yours sincerely,'.

Ответ: I am going to write in an informal style, as I am writing to a friend. I would start the email with a greeting, such as 'Dear Jack,' and end with a closing, such as 'Best wishes,' or 'Yours sincerely,'.