【答案解析】Dear Steven,
Thank you for trusting me. In your letter last week, you asked for my advice regarding whether you should study English or Economics at university. I would like to make some useful suggestions.
Firstly, you should bear in mind that interest is the best teacher. Whether you can study well depends on whether you like your major. Besides, you have to decide what kind of job you want to get. Finally, you"d better make a decision after your consulting a student at the university to get more information of the majors.
I hope that my suggestions can do you a favor, and I wish you a good future.