2. I couldn’t read my book because it was dark.
3. She couldn’t swim because the water was very cold.
4. We couldn’t eat our dinner because we weren’t hungry.
5. I couldn’t speak to Kevin because he wasn’t home.
6. They couldn’t play tennis because it was wet.
7. I couldn’t sleep because I wasn’t tired.
8. They couldn’t buy alcohol because they weren’t 18 years old.
