9. It was an____(极其)difficult and dangerous task.

8. The ____(真相) will come out in the end.

7. We’ve not____(决定) the date for the meeting.

6. How much do you____(要价) for a room for the night?

5. A person who serves food at tables in a restaurant is called a w ____.

4. It was s____of you to believe such a person.

3. The dog followed the fox’s t ____.

2. English is often used as the c____.

1. He met his friend at the airport by a____.

5. A. We don’t know much about physics. 　

B. We ____ ____ about physics. 　

单词拼写