can, can't, could and couldn't

I was bussy yesterday, I ________ finish my homework.

• could

• couldn't

• can

• can't

She ____ dance very well, she is awesome.

• can't

• could

• can

• couldn't

I ______ swim, I didn't learn how to do it.

• can't

• could

• couldn't

• can

Her grandmother was bilingual; she ______ speak both English and Spanish

• can

• can't

• couldn't

• could

When I was young, I ______ play the guitar; it was too difficult for me!

• can't

• couldn't

• could

• can

Mary's grandfather ______ play chess at his youth and he was the best!

• can

• couldn't

• could

• can't

You ______ draw a cow, it looks like a big dog.

• couldn't

• can

• can't

• could

My grandmother _____ cook a very delicious lasagna.

• couldn't

• can

• could

• can't

We ______ ski right now because we must stay home.

• couldn´t

• can

• can't

• could

We _______ open the door; it was locked from the inside!

• couldn't

• can

• can't

• could