1. The teacher affirmed that these students _____ the exam.
2. The despair_____ him in a very short time.
3. _____ in a mosquito-net.
4. Smoking_____ the health of the smokers.
5. The president _____ will investigate the case tomorrow.
6. She_____ here yesterday. I am sure of that.
7. These school children_____ what they had to do.
9. No sooner_____ than be begins to cry.
10. Seldom_____ allowed to do that.
11. After each chapter in this book…….where reference material may be included.
12. The new school principal_____ my uncle's name.
13. Never before _____ such a demonstration.
14. Only by in haling ether himself_____ its effect on human being.
15. The fairy_____ a jade bowl into the sea.
16. The long ridge of cliffs_____ a dragon's crest.
17. _____ us draw in that net, please.
18. It_____ only when the game was over that he felt "a little frost bite".
19. It is in this room_____ we usually hold our meetings.
20. Wasn't it her family_____ emigrated to Australia?