He _________swim. (-)
He can't swim.
It _________ jump. (-)
It can't jump.
We _________ kick a ball. (+)
We can kick a ball.
I _________ ride a bike. (-)
I can't ride a bike.
They _________sing. (+)
They can sing.
You _________ climb. (-)
You can't climb.
He _________ catch the ball. (-)
He can't catch the ball.
He _________ throw things. (+)
He can throw things.