He __________ swim fast when he was eight.
He could swim fast when he was eight.
They ___ chop a tree when they were young.
They could chop a tree when they were young.
We ___ dance very well 5 years ago.
We couldn't dance very well 5 years ago.
What can you do now?
Now, I can ..........
What can't you do now?
Now, I can't ..........
