Hi! Where are you going?
I am going to the post office.
Why are you going to the post office?
To buy an envelope.
What do you need an envelope for?
To send a letter.
Who do you want to send a letter to?
I want to send a letter to my friend.
Where does your friend live?
He lives in Canada.
In what city of Canada does your friend live?
My friend lives in Vancouver.
There is the post office. We have arrived.
Good bye.
Good bye.
