Write a letter to your friend, explaining them why you can not come to their birthday party.

Bardzo się rozchorowałeś. Napisz list do przyjaciela, tłumacząc mu, dlaczego nie możesz pojawić się na jego przyjęciu urodzinowym.

Dear Spike,

How are you? Have you finished all the preparations for Your party? Wish I could be there and help you. Unfortunately I can not. What is more, I am afraid I will not be able to come to Your party. The problem is I am horribly sick.
Although the doctor came to me yesterday, I had been feeling really bad for a couple of days. It started on Monday morning, when I woke up with a terrible stomachache. I took some pills but it did not help. Then, in the evening the temperature started, along with strong headache. When I finally ran to the bathroom I could not stop vomiting! On Tuesday morning things got even worse. The temperature rose up, I could not drink, not to mention about eating. The worst came when mum gave me some pudding – the diarrhea started. The doctor came this morning, checked my pressure and touched the stomach. He said it is food poisoning. He gave me an injection and told to drink some smelly herbs. So I am lying in bed, feeling like a wreck.
Have a good time at the party. I wish you all the best for your birthday! Hope to hearing from you soon.

Best wishes,
Brian