Can/could
Tom ___________________ drive but he hasn’t got a car.
I can’t understand Martin. I’ve never _______________ understand him.
He can’t play tennis very well now but he __________________ quite well when he was younger.
She can’t run very fast now but when she was at school she ____________ faster than anyone else.
He had hurt his leg, so he _____________ walk very well.
She wasn’t at home when I phoned but I ___________________ contact her at her office.