Could, be able to, managed to

The fire engine arrived immediately and they _____ put the fire out quickly.

• could

• managed to

• were able

• couldn't

That's a new record for the 100m breaststroke. Not bad for a man who _____ swim until he was 14.

• didn't manage to

• could

• couldn't

• managed to

It was too dark in the cinema and we weren't _____ find our seats.

• managed to

• couldn't

• able to

• could

The party starts at nine. I do hope you _____ be able to come.

• can

• manage to

• could

• will

They were identical twins and I just _____ tell them apart.

• could

• couldn't

• not able

• not managed

It's a bit expensive but we might just _____ afford it if we work harder.

• manage to

• be able

• could

• managed to

The test was so easy that I _____ finish an hour before the end.

• didn't manage to

• managed to

• can

• could

The fog was so thick that we _____ see where we were going.

• didn't manage to

• managed to

• couldn't

• were able to

The door was locked but we _____ open it because we had the key.

• weren't able to

• managed

• were able to

• couldn't

He was too far away and we _____ hear anything he was saying.

• not able

• could

• weren't able to

• managed to