Question

Your friend calls you in the morning to inform you that after school you have to attend an extra class for English.you are about to leave for school and your mother is not at home and will be back by 5 pm.

Answer 1

☆Hello friend☆

The above text shows that you want a Notice to inform mother about sudden extra classes.

NOTICE
17th March 2018
EXTRA CLASSES

Today a phone came of my friend who informed me that we have to attend extra English classes. I did not know about it before, but now I have to go for classes in your abscence so please do not worry when I will not in home in your entrance.

XYZ