Question

letter to your uncle in abroad telling him why he should not come to
your country

Answer 1

sender address
date
address to receiver
sub
respected uncle
body
your sincerely
your name

Answer 2

u may write that something like this


Hi uncle I hope my letter finds u in a good condition .
I think that this time also I cannot come to the city as I have heard that our city is very much polluted . Say namaste to aut from my side .