Respuesta:
i have some letters to send in the post office.
There aren't any people in your house right now
she needs to buy a cake for her mom's birthday
there's a new airport in the city
Explicación:
Some= positive sentences
Any= Negative sentences
An= antes de una palabra que empiece con una vocal o sonido vocal
A= antes de una palabra que inicie con consonante o sonido consonante