| 单句语法填空。 |
| 1. By the time he got home, his wife ______ (do) all the housework. 2. In the United States, lunch _______ (offer) to students for free at school. 3. The first step towards _______ (protect) the environment is to live a "low-carbon" lifestyle. 4. While I ______ (sweep) the floor yesterday, the telephone rang. 5. The audience are requested _______ (show) their tickets when they enter the cinema. 6. They _______ (eat) up all the food, but they still feel hungry. 7. We meet each other _______ (frequent) in this hotel. 8. I prefer basketball _______ football. 9. By reading we can ________ (rich) our vocabulary and improve our English. 10. My friend is growing _______ tired of English words that he wants to give it up. |