How do parents politely ask the teacher for leave?

Parents can politely ask the teacher for leave:

Dear teacher, I am Xiaoming's parents. I need to take a day off for Xiaoming tomorrow because of something urgent at home. I'll get him back to school as soon as possible and make sure he makes up for the missed courses. Thank you very much for your understanding and support.

2. Dear teacher, I am XX's parents. I'm sorry, for personal reasons, I need to take an afternoon off for my children. I will make sure that he/she finishes all unfinished homework ahead of time and that he/she knows his/her learning progress. Thank you for your understanding.

3. Teacher, I am XX's parents. Due to some unforeseen circumstances, I need to take a day off for my children. I will ask him/her to make up the unfinished study tasks as soon as possible. I appreciate your understanding and cooperation.