Question

Написать письмо другу который пригласил Вас в кино, но Вы не можете пойти помучто заболели, приетом не забудьте сказать "спасибо за приглашение" 
НА АНГЛИЙСЬКОМ ЯЗЫКЕ, НЕ МЕНЬШЕ ЧЕМ 6 ПРЕДЛОЖЕНИЙ

Answer 1

Dear friend, I write you because I can't go to the cinema with you. I became ill. Can we go to the cinema another day? I think I'll be all right after two days. There are a lot of interesting films showed in the cinema that day. Excuse me again. I'm very thankful for your inviting. Your respectfully, ...

Answer 2

Dear ....(имя друга, Andrew например)
I decided to write a letter to you, to warn you.
You asking me to go with you in the movies. I'm sorry to say this, but I got sick and can't go with you. Thank you for the invitation, I am very pleased.
I hope that I will recover your invitation will remain in force, and we watch a movie together.
Offer to go to the movie " Dubrovsky", I think he will be an extraordinary film adaptation.
With best wishes,
Vika.