Odpowiedź:
Dear mate from England,
How are you doing? I hope your fine. If you want to know I am fine too. And guess what! I started to do sports and eat healthy. That's a bit boring, but I need to do it if I want to be good in future. Tennis isn't that bad anyway. Yeah, I just started it, and it looks fun at the moment. Do you remember camp, that we were 3 years ago? We played tennis, and you said that it is exciting. Maybe you should try it? Then we can play it next holiday!
see you soon,
XYZ
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Mam nadzieję, że ok