British spelling vs American spelling (A2 - C2)

 Have you ever been to the Kennedy Space "Center"?
Center is:

Can I have a "litre" of milk, please?
Litre is:

If you want to lose weight, stop eating so many "donuts".
Donuts is:

He was wearing black jeans and a grey shirt.
Grey is:

She went from acting in the "theatre" to working in films.
Theatre is"


Jamaican runners usually win the 100 "meter" finals.
Meter is:

You know how to change a "tyre", don't you?
Tyre is:

Don't forget all the "favors" he's done for you in the past.
Favor is:

She said they sent us a bank "cheque" last week.
Cheque is: 

All the houses in the estate are the same "color".
Color is:

Have you ever been to the Kennedy Space "Center"? Center is: