1. I know your face but I ...cannot... remember your name. 2.He looked for the book but he ..couldn't... find it.
3. When he was young, he ..could.. sing very well. 4. She's ill, so she
won't ..be able to.. come this weekend. 5. If he spoke slowly, I ..could.. understand him. 6. It was very dangerous, but she ...could..
take calm breaths. 7. She was sensitive and she ..couldn't .. take criticism.
8. I used to..be able to.. dance well, but I ..couldn't.. dance last night.