Sorry for delay the class.

Hello, teacher. It's Hyeri Kim.
I'm sorry to tell you that i will not be able to attend the class today.
In last class, I told you I caught a cold and It became worse.
So I cannot speak a word now.
Maybe I have to take a rest today to be feeling better soon.
I was very motivated to study English after your class.
So It's very sad that i missed it.
I'm looking forward to feeling better and having a class with you.
See you later.
Have a nice day!

Hello, Teacher. It's Hyeri Kim.

I'm sorry to tell you that I will not be able to attend the class today.
In our previous class, I have mentioned that I caught a cold and It became worse,
and I find it really difficult to speak today.
Maybe I will take some rest today so I can feel better soon.
I was very motivated to study English after your class,
So It's very sad that I've missed it.
I'm looking forward to feel better and attend the class with you again, soon!
See you later.
Have a nice day!

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Thank you so much, Ms. Hyeri! I look forward to seeing you in our class again. I appreciate you taking the time to let me know about the situation, and I hope you get better soon! 

Teacher Robert.