Complete the sentences using can or (be) able to. Use can if possible; otherwise use (be) able to.
I can’t see you on Friday but I *** meet you on Saturday morning.
George has travelled a lot. He can speak four languages.
I haven’t been able to sleep very well recently.
Sandra can drive but she hasn’t got a car.
I can’t understand Martin. I’ve never been able to understand him.
I used to be able to stand on my head but I can’t do it now.
I can’t see you on Friday but I can meet you on Saturday morning.
Ask Catherine about your problem. She might be able to help you.