01. Everyone in the class has been asked to fill in ____ name.

02. One should always be careful of ____ health.

03. –Do you want tea?

–Yes, I want ____.

04. –Where does he live?

–He lives ____ 145 Wall Street.

05. The wood of some trees is harder than ____.

06. ____ is only ten minutes from here to the Children’s Palace.

07. –Hasn’t Prof. Zhou arrived yet?

–No, and I ____ he ____ here by this time.

08. –Would you like me to turn down the radio a bit?

–No, ____. I’m used to working with the radio on.

09. –Jane failed to pass her final exam.

–Yes, I regretted ____ to help.

10. He ought to study hard, ____?

11. I’m sure all will go well as ____.

12. I’m leaving now. ____ you lock up.

13. People call that ____ two birds with one stone.

14. You can’t get there ____ by swimming.

15. I did nothing last night but ____ TV.

16. I had been thinking ____ you, but I was too busy to leave.

17. I (had) thought ____ you; since you have come, now I’ll ask you some questions.

18. –Mum, I’m hungry. Please bring me something to eat.

–Help yourself. Lots of food ____ on the table.

19. Only by this ____ possible for us to finish the work in two days.

20. The boy would have died ____ for the doctor.