Write an application to your principal requesting him for leave for a week because of your mother's illness.
Dear Student,
C-10, Anand Nagar
New Delhi
1st July, 2018
The Principal
XYZ School
New Delhi
Subject: Application for leave
Respected Sir,
This is to bring to your kind notice that I am studying in Class VII of your school. My mother has been terribly sick for the past few days. I will not be able to attend school for a week as my father is not home and I have to look after my mother all alone.
Kindly grant me leave from 2nd July to 8th July. I assure you that I'll join back on 9th July positively.
Kindly do the needful and oblige.
Yours Sincerely
ABC
Regards