closed and ...?
closed and open
up and ...?
up and down.
day and ...?
day and night.
hard and ...?
hard and soft.
big and ...?
big and small
go and ...?
go and stop.
front and ...?
front and back.
sweet and ...?
sweet and sour.
fast and ...?
fast and slow.
happy and ...?
happy and sad.
laugh and ...?
laugh and cry
cold and ...?
cold and hot.
near and ...?
near and far.
top and ...?
top and bottom.
tall and ...?
tall and short.
boy and ...?
boy and girl
full and ...?
full and empty.
... and small.
big and small.