When I was young I can/could run very fast.
could
Bill and John can't/couldn't come to the party next week.
can't
can/could you do math when you were three?
Could
She can't/couldn't read the story. It is too difficult.
can't
The box was so heavy, that I can't/couldn't lift it yesterday.
couldn't
What books can/could Ms. Smith read when she was a teenager?
could
What can/could your brother do when he was a baby?
could
I can/could meet him tomorrow.
can
I was tired last night but I _______ sleep.
couldn't
I _____ answer the question. It is very easy.
can
Jane _____ play badminton today because she is busy.
can't
Не _____ go to the party last Sunday. He was sick.
couldn't
I _____ read when I was two years old.
couldn't
What _____ you do better, math or English?
can
She wears glasses. She _____ see very well.
can't
When I was 4, I _____ dance well.
could / couldn't
