Can vs Could

Penguins ___ swim very well

I ___ run very fast when I was younger

We are on quarantine, so we ___ go out now.

Many weeks ago, we ___ go outside and play.

___ you play the piano when you were seven?

I ___ sleep last night, that's why I'm so tired today.

He has a broken leg, so he ___ walk correctly for a few days.

Sam ___ go to the party because he was too busy at work.

When I was five or six, I ___ do a handstand, but I can't now!

I met Derrick last year. He ___ swim. He was terrified of water! Now, he ___ swim like a fish. (separate answers with a ",")