Question

Чем заканчивается диалог:
-What a you doinn? Mery?
-I am writen.
-What a you writen.
-I am writen a letter...

Answer 1

For my friend,about my holidays

Answer 2

It must be :
-What are you doing?Mary?
-I am writing.
-What are you writing ?
-I am writing a letter.