1. A few political extremists [   ] the crowd to attack the police.


2. My coworkers have been working hard to [   ] a fuel shortage next summer.


3. Joy and happiness spread throughout the Middle East and North Africa, where people [   ] their own president in January 2011.


4. Steve was [   ] with joy when he found he had won the first prize in the lottery.


5. On the average, a healthy heart __ to pump five tablespoons of blood with every beat. 


6. A: Can you pass the test? B: [   ] A: Good for you. I’m very likely to fail.


7. Working at your computer for a long time can [   ] pain in your wrists.


8. The     plan of the company provides income security for their employees after retirement. 


9. George Washington [   ] his father’s cherry-tree.


10. A: Gee, your room is a mess. B: I have been preparing for an important exam these days. [   ]


11. A:How did it go in the office today? B: [   ]


12. Modern people tend to value material enjoyment too much and ignore [   ] pursuit.


13. Major newspapers have their Internet websites [   ] daily, so their readers can get the latest information.


14. At first I didn’t find her annoying, but after a while her behavior began to [   ] me.


15. The secretary was [   ] for work because of the heavy traffic.


16. There is a debate going on right now over [   ] to make mercy killing legal or not.


17. That old man has no family, so he sometimes gets very, very [   ].


18. The two eastern counties suffered losses of NT$11.4 million to farms and local agriculture, while related facilities sustained damage [   ] 18 million NT dollars.


19. We can always work toward improving our self-control, and, [   ], we can help others do the same.


20. Most students think that there is a need to [   ] bus fare, but not all students agree to have the fare increased by 35 percent.


21. The snow [   ] on the roads makes driving an extreme hazard for people rushing to work in the morning.


22. Violence has become so [   ] in movies these days that many parents do not want their children to watch them.


23. We don’t need to [   ] what the future will hold; just focus on the present task.


24. 《Saleslady》: Hi, can I help you? George: No, thanks. [   ] 《Saleslady》: All right. If you need any help, just let me know. My name is Joyce. 《George》: Sure. I’ll let you know if I need anything.


25. I had planned on going out last night, but [   ] prevented it.


26. As [   ] as it had started, the rain stopped and the sun came out from the blue sky.


27. The deadline is Friday, so we had better [   ] the report as soon as possible.


28. Please turn off the light. We should save [   ]; otherwise, the bill might go up again.


29. Lucy is a member of the drama club. Her dream is to become an [   ] or a singer.


30. After [   ] his homework, he decides to go out for a break.


31. The National Palace Museum will continue to cooperate with Beijing's Palace Museum [   ] will not loan artifacts to China.


32. Janine will probably lose her job [   ] her boss in front of the entire staff last week.


33. Our teacher always tells us that knowledge should be [   ] through years, not gained in one day.


34. [   ], I continued working until late last night.


35. 《Sam》: Would you like to go swimming with me? 《Jane》: [   ]   I think I’m getting a cold.


36. The suppliers will claim compensation if we partially ____ our contract with them. 


37. After eleven o’clock in the evening, the bus is empty [   ] the driver and the conductor.


38. The president’s reckless actions have [   ] his country into a disaster.


39. Tammy often [   ] music from the Internet to her MP3 player.


40. Historical insights serve to clarify and [   ] the critical activity of a period.


41. Small businesses usually can respond to new market     fast and make necessary changes. 


42. You should have finished this work a week ago, but you didn’t. I think you should give me an [   ].


43. We can find almost all the information we need [   ] surfing the Internet.


44. We should work together [   ].


45. Mutual funds came into our country in recent years. This financial product was developed for those who do not have enough time, money and [   ] knowledge to invest.


46. I haven’t decided when I’m [   ] New York. I’ll let you know once I get the flight ticket.


47. Robert can’t drive us to the airport. He has [   ] to take us all.


48. Tom is very [   ] and helpful, and it has been nice having him in class.


49. Michelle often reviews research papers for one of the top journals in [   ] genetics.


50. They made every possible [   ] to overcome the difficulty which they faced.