I read the book three times but I ___ understand it.
couldn't
Unfortunately, I really ___ sing at all! No-one in my family is musical either.
can't
I ___ understand the chapter we had to read for homework. It was so difficult.
couldn't
He ___ arrive at the party on time, even after missing the train, so he was very pleased.
couldn't
When the car broke down I was really pleased because I ___ solve the problem.
was able to
I ___ open this window. I think it’s stuck!
can't
I ___ lift this box – it’s too heavy! Would you help me?
can't
I ___ drive a car until I was 34, then I moved to the countryside so I had to learn.
couldn't
He’s amazing, he ___ speak 5 languages including Chinese.
can
She’s 7 years old but she __ read yet – her parents are getting her extra lessons.
can't
____ you swim when you were 10?
Could
I searched for your house for ages, luckily I ___ find it in the end.
was able to
John ___ play tennis really well. He’s champion of his club.
can
I looked everywhere for my glasses but I ___ find them anywhere.
couldn't
My grandmother ___ use a computer until last month. Since then, she’s been taking lessons at the library.
couldn't
Amy ___ speak Japanese when he lived in Japan, but she’s forgotten most of it now.
could
We ___ get to the meeting on time yesterday because the train was delayed by one hour.
couldn't
Julian ___ play excellent golf when he was only ten.
could
Gill ___ play the piano. She’s never studied it.
can't
Lucy ___ make it to our meeting after all. She’s stuck in traffic at the moment.
can't