Si es en primera persona y presente sería :
yo escribo
The correct way is;
Esta caja registradora
Hola, Cual es su nombre? Dejame presentarte a mi amiga amy.
(English, Hello, what is your name? Let me introduce you to my friend amy.)
Hope this helps you and good luck with spanish
I think estufa makes more sense, because there are usually stoves in kitchens, as opposed to sofas and cars, and it's a better answer then a place to sit down.
Hope this helped!
Answer:
I think he was 35, I am not sure