Using “be able to” or “couldn’t” to complete the sentences. 1. The car fell into the river. The worker ......... get it out but the driver was dead. 2. I knew the town so I ..................... advise him where to go. 3. Despite the arrival of the storm, they ..................... finish the football match. 4. After his car crashes, he was so confused that he ..................... tell the police who he was or where he was going. 5. I haven’t ..................... concentrate recently on work. I don’t know what it is.