Эмейл на другу что я не смогу пойти с ним на концерт в этот четверг, )

Dear Mike,  

Hi! Thank you for your invitation to the concert. Unfortunately, I can`t join you this Thursday. I will have a Math test on Friday and I have to prepare for it. I am not good at Math, so I must study rules. Hope, you will have a good time and enjoy the concert.

Best wishes,

Kate

Объяснение:

Hi! Thank you for your invitation to the concert on Thirthday. But I am ill. I have stomack trouble and the headache. My temperature is high. I am sorry.

I want to meet you after the and of my illness. Bye! Your pen friend.