10. You promised you would buy me a new bike, so you must _____________.

11. The audience ______________ as the acrobat walked along the tightrope.

12. This song ______________ me ______________ my motherland.

13. In order to complete the task on time, the workers are working _____________.

14. I hope you will _____________ each other during your stay in China.

15. We invited her to dinner but she didn't even bother to ____________.

Ⅲ. 用适当的情态动词填空。

1. I don't know when the guests ________ be here. They ________ arrive at time.

2. -Who was that man talking with your teacher?

　-I'm not sure. It ________ be her brother.

3. Why don't you try on this dress? It _________ look nice on you.gkstkgkstkgkstk.Com]

4. My father's birthday is coming. What ________ I get him?

5. I haven't decided where I am going for my holidays. I _________ go to Australia.

6. It's a long time since we met last time. You ________ come and see us more often.

7. (The doorbell rings. ) I wonder who that is. It ________ be Mary. She is still in the library at this time.

8. You've been working all day. You ________ be very tired.gkstkgkstkgkstk]

IV. 单句改错。

1. In most countries, on April Fool's Day, people often play trick on each other, and children especially have great fun.

2. The chair looks rather hard, but in fact it is very comfortable sit on.

3. Don't handle the vase as if it is made of steel.

4. Great changes have taken the place in our school in the past 10 years.gkstkgkstkgkstk.Com]

5. Words came that our team won the competition of our city.

6. They held a party in celebrate of their political independence.

7. The villagers held a meeting in memory the soldiers who lost their lives in the rescue.gkstkgkstkgkstk]

8. On arrival at the airport, my friends gave me a big hug.

9. It is my believe that staying up late does harm to one's health.

10. We are looking forward to reach our goal of forming our own band.

【答案】