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.