根据句义，用括号内所给词的适当形式填空。

1. I think traveling by train is more popular. Because it’s much cheaper and far more _________（enjoy）.

2. Chocolate is usually the _________（child） favorite food.

3. It rained _________（heavy）, so he didn’t go to work yesterday.

4. Thank you very much for your _________（invite）. But I’m so sorry that I can’t come to your party tomorrow.

5. After the terrible earthquake, hundreds of people were _________ （home）.

6. She is always forgetting __________（give） me my letter.

7. All of the students are__________（suppose） to hand in their homework on time.

8. If it __________（rain） next Sunday, we won’t have a football match.

9. He kept on __________（talk） until the class was over.

10. He said that he __________（come） back in five minutes.