8. Helen can't dance now, but when she feels better 9. Helen can't help her mother now, but when she feels better 10. Helen can't skate now, but when she feels better Rewrite the sentences using could where possible. 1. Susan wasn't able to sing because she was ill. Susan couldn't sing because she was ill. 2. The winter was very warm and we were not able to throw snowballs. 3. It was very foggy in the morning but Kate was able to drive. 4. Mary wasn't able to visit us as she was in her office. 5. It was very dark but we were able to find the house. 6. He didn't feel well but he was able to win the game. 7. It was raining heavily and we were not able to arrive at the station at 6 o'clock. 8. She didn't learn the text but she was able to re-tell it.