17. Mother was busy with some housework when I got home.

　Mother was_________ _________some house-work when I got home.

16. It was so interesting a film that all of us saw it twice.

　It was_________ _________interesting _________that all of us saw it twice.

15. All are here, but our English teacher isn't.

　_________is here _________our English teacher.

14. She has been a nurse for five years.

　　It_________ _________ _________ _________she became a nurse.

13. Listen carefully,and you'll become more interested.

　　_________ _________listen carefully, you'll become more interested.

12. I saw them playing basketball there.

　　I saw _________they_________ _________basketball there.

11. I have something to tell you. It's interesting.

　　I 　have　 _________ _________ to tell you.

10. The teacher told us that we should not meet at the school gate.

　The teacher told us_________ _________ _________at the school gate.

9. He is one of my friends.

　He is a friend _________ _________.

8. The earth is bigger than the moon.

　The moon Is _________ _________ _________ _________the earth.