Odpowiedź:
Jeśli zadanie polega na dokończeniu wypowiedzi to proponuję takie rozwiązanie:
Hi Maddie!
Happy Birthday! I'm so sorry, that I didn't go to your birthday party, but I had to learn to my math exam. I hope you are not mad on me, in the reason of that I didn't meet with you during your birthday... I wanted to spend some time with you but I couldn't do that, because of my mom and my exam session... I believe that you will forgive me. See you soon!
Wyjaśnienie:
Myślę, że cokolwiek pomogłem :)
Pozdrawiam! :)