If you are sick today and want to call the teacher for leave, what should you say?

Hello, teacher! I am XXX. I have a cold. I can't go to school today. I want to ask for leave to go to the hospital. Do you think it's okay? ?

Example 2:

Hello, teacher! I'm XXX, and I can't come to school because of XX. I take X days off, please approve, thank you.

Example 3:

Hello, teacher! I can't come to school because I have XX disease (want to be hospitalized) and need to be nursed back to health at home. I want to take a few days off, please approve, thank you.

Example 4:

Hello, teacher! I'm calling you today to ask for a few days off, because I feel sick. My mother took me to see a doctor this morning, and the doctor asked me to stay at home for a few days. So I hope you will approve, and I will definitely make up the missed courses after I get sick. Thank you.

Example 5:

Hello, Teacher XX! I'm XX (name). I can't attend XX (course name) on X month X day due to XX (leave reason). I hereby ask for leave, please approve.