1. You should understand that learning a language well results from [   ] practice.


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


3. The label on the canned pork says this product is [   ] to be free of preservatives.


4. I was [   ] about Mary so I watched her closely.


5. Many couples wanted a divorce but could not have one because their case was not covered by any __. 


6. Peter always complains about the hot and [   ] weather in Taiwan. He misses the dry and cool seasons in Florida.


7. A:Good morning, traveler’s check department. B:I’ve lost my traveler’s checks. I want to stop payment. A: [   ] Your name, please.


8. The MRT system has greatly [   ] this area; I can’t even recognize the location of my old school.


9. 《Tom》:I’m going to take a singing class. Do you want to take it with me? 《Penny》: [   ]《Tom》: Really? Sing a song for me now.


10. A fine will be     on the drivers who fail to pay their highway toll on time. 


11. I have fallen in love with a girl [   ] father is a famous writer.


12. [   ] warming has caused dramatic climatic changes in many areas around the world.


13. It didn’t take us long to get here because there [   ] traffic.


14. If you [   ] my children, what subjects [   ] you teach them?


15. The [   ] earthquake has buried over 18,000 lives in southwestern China’s Sichuan province.


16. Many college graduates fight their way into the renown and     companies for better career advancement. 


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


18. To have her own clothing store, Jane borrowed money from family members to get her business __. 


19. A:I can’t get into my favorite jeans anymore. It’s really depressing. [   ]. B:Well, I think you look fine. You shouldn’t worry about it.


20. Public education ____ would need to be increased for small-size classes, teacher training programs and new E-learning facilities. 


21. A: What does 420 [   ] 100 equal? B: It equals 320.


22. 《Martin》: I did terribly at the math exam. I don’t think I will pass. 《James》: [   ] You’ve spent too much time playing the computer games lately.


23. The manager insists that the door [   ] locked at night.


24. A lot of debris [   ] at the site of explosion for quite a while.


25. U.S. Secretary of State Hillary Clinton said on Saturday the United States and China can help pull the world out of economic [   ] by working together.


26. We [   ] tell John about the accident, shouldn’t we?


27. The exterior of Tina's apartment has an exceptionally large [   ].


28. 《John》: Sorry, my English is very poor. 《Jay》: Don’t worry. Mine is not [   ] better.


29. You cannot leave [   ] you finish all the work the boss expects you to do.


30. Research in the environment has [   ] that the rain forests throughout the world are being ruthlessly destroyed.


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


32. It is imperative that the city council     in favor of the city renewal plan. 


33. I haven’t decided when I’m __ New York. I’ll let you know once I get the flight ticket. 


34. This restaurant makes good sandwiches. They will even [   ] your bread for free.


35. I had a great time reading the book [   ] you lent me.


36. I can’t ride my bicycle [   ] there isn’t any air in one of the tires.


37. Where did you have your hair [   ]?


38. The economy is in bad shape, one reason for which is the rising [   ] rate.


39. 《Customer》: I’m looking for a portable CD player. 《Salesgirl》: [   ]《Customer》: Hmm. Do you have something a little less expensive?


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


41. If a soldier lost his weapons in a __, he needed to fight with just his body. 


42. I like to [   ] time [   ] my family.


43. All employees are required not to discuss     information about the company. 


44. In the previous year, you [   ] ballpoint pens and pocket calendars to my school. Will you do the same this year?


45. The good weather and beautiful beaches make this island a great [   ] attraction.


46. [   ] she told me I was her good friend, she never talked to me about her problems.


47. This Italian restaurant is the [   ] place to eat in the city.


48. No other girl in her class dances [   ] as she does.


49. People who feel they must have the best of everything are rarely [   ]. It’s better to have more realistic ideas about what is important in life.


50. Many of our character traits are not tested __ we are in a difficult situation.