II. Complete the sentences. Use the correct word in parentheses.
1. He felt sick because he had eaten too much.
2. He didn’t study so he failed the test.
3. His car didn’t start because the battery was dead.
4. Solar energy is clean and almost endless.
5. I sent her three letters, but she didn’t reply.
6. I will tell you my plans while we are having dinner.
7. I enjoy learning English but I find it very difficult.
8. Her hobbies are watching TV and playing games.
9. The course was cancelled because there were very few students registering for it.
10. The weather was cold so she wore a sweater.