Read the e-mail you've got from your friend and answer it. Hi! I'm so sorry, but I won't be able to come and help you fix your printer

Hi, Laura,
Don’t worry about my printer — I'll manage somehow. As for your symptoms, I think it’s flu and you should start treatment immediately to avoid possible complications. The first thing I can advise is…
…to take a hot liquid because it can lessen your symptoms. I strongly recommend you hot chicken soup, it is most useful. Taking long naps on a warm bed also soothes flu and helps the body regain strength. So you should stay in bed and stop worrying about math test. Health is the most precious thing that you have. It is most important.
So, take care of yourself. I hope you’ll get better soon.
Yours, XXX