CAN / CAN'T
 
POSITIVE + NEGATIVE - INVERSION QUESTIONS ? SHORT ANSWER
I
You
He
She
It
We
They		 can swim
I
You
He
She
It
We
They		 can't swim.
Can I
you
he
she
it
we
they		 swim?
Yes,

No,

 I
you
he
she
it
we
they		 can.
can't.
could.
couldn't.