A letter to principal requesting for 20 days leave as you are sick

To,
The principal
School name
subject- regarding for 20 days leave

sir,
Most humbly and respectfully I beg to say that I'm suffering from high fever since last night. so I'm unable to attend my classes . So grant me leave for 20 days , I shall be obliged to you.

Yours faithfully student
Name-
class- viii
Roll no -

I hope it helps you