1、  _________ Mr. Smith is well again, he can go on with his work.

2、  Peter turned off the lights and then _________ the classroom.

3、  —Has your brother finished his letter yet?

4、  Of all the boys in the class, Mike is _________.

5、  —The light in the office is still on.

6、  I love Jackie Chan’s movie very much. He is my _________ actor.

7、  They _________ so proud of their school.

8、  Work hard, _________ you’ll learn English well.

9、  My father has worked in the factory _________ he was 20 years old.

10、  The river is the second _________ one in the town.

11、  The number of people invited _________ fifty, but a number of them were absent for different reasons.

12、  Robert is interested ________ the piano. He has played it for ten years.

13、  _________ of the students are girls in my class.

14、  —Is _________ here?

15、  You _________ see her, but her son must.