(-) I AM NOT good at cooking
I WASN'T good at painting
(?) CAN you play the guitar?
COULD you play the guitar?
(-) You CAN'T play footballl
You COULDN'T play football
(?) DOES he DRINK juice?
DID he DRINK juice?
(?) DOES she PLAY the piano?
DID she PLAY the piano?
(?) IS he a chef?
WAS he a chef?
(?) ARE they in the team?
WERE they in the team?
(?) Do you EAT grapes?
DID you EAT oranges?
(?) Do you THINK about that?
DID you THINK about that?
(?) Do you DO your homework?
DID you DO your homework?
(-) We DON'T GO to the park
We DIDN'T GO to the park
(+) They HAVE really good marks
They HAD really good marks
(-) You ARE NOT good at cooking
You WERE NOT good at cooking
(+) I AM good at painting
I WAS good at painting
(-) I DON'T SWIM very well
I DIDN'T SWIM very well
(+) You CAN play many sports
You COULD play many sports
