She _____ understand anything because she didn't listen.
couldn't
You _____ smoke in the restaurant.
can't
He _____ run very fast when he was young.
could
Last year I _____ read without glasses. Now I need to wear glasses whenever I read books.
could
You _____ go to the party! Finish your homework now!
can't
It's 10am! It _____ be dark outside! What is going on?
can't
We have some oranges and I think I ___ make some juice.
can
I _____ speak English because I practice every day.
can
I _____ cook.
can't
She _____ sing really well. I bet she is better than you.
can
I'm busy right now so I ___ talk to you.
Can't
Before I went on my diet I _____ run a marathon! It was too tiring for me.
could not
He _____ read when he was only 3 years old.
could
She _____ speak several languages. She is very good.
can
I _____ play the piano when I was younger. I learnt to play the piano when I was 5.
could
we _____ leave the class unless we answered all the questions.
couldn't
I _____ juggle 8 balls until I became a clown.
couldn't
He said that he _____ lift that box.
could