A special offer on a product
promotion
A piece of paper you receive when you buy something
receipt
The husband of your mother
my father
I do
Present Simple
Can't see him
John Cena
Return an item that you bought online
send something back
Take something back to a shop and replace it with something else
exchange
the daughter of your mother
my sister
I had done
Past Perfect
Jack, Sky, Matt, Monica
Power Rangers
A lower price than usual for something
discount
Something that you buy
purchase
The father of your father
my grandfather
I am doing
Present Continuous
Blonde man with a sword
He-man
Shopping on the internet
online shopping
Money given back to you if you return something
refund
The son of your uncle
my cousin
I will do
Future Simple
Creator of Lisp
John McCarthy
Helping customers in a polite way
customer service
Ask for money for a service or activity
charge
The mother of your daughter
my wife
I did
Past Simple
Previously Viaweb, now essays and tweets
Paul Graham