1. The field is too barren to yield crops, so the farmers decide to put some [   ] on it.


2. Children like to go trick-or-treating in special     on Halloween. Some may dress like an angel or a robot. 


3. ____ you encounter any problems regarding the new system, please notify the tech support ASAP. 


4. A:Did the committee members ask you many questions in your thesis defense? B: [   ]. I am not optimistic about the result of the defense.


5. From now on, all visitors to the building must show their [   ] in the lobby.


6. The [   ] of the theory is still being questioned since a number of researchers disagree with its main argument.


7. [   ] you get from the website [   ] correct.


8. The building collapsed, and only one person buried underground could [   ] survive the catastrophic earthquake.


9. Tigers are a(n) [   ] species, but they are still hunted for their bones and skins in some areas.


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


11. The government hopes that the charge for trash disposal can [   ] people from throwing away usable resources.


12. I want to see ____. 


13. 《Sandra》:I think watching TV is a waste of time. Most programs are stupid or boring. 《Jack》: [   ] What about sports or the news? You watch those sometimes, don’t you? 《Sandra》: Well, actually for the news, I prefer the newspaper.


14. Students must study hard, [   ] they will fail the test.


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


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


17. Not only [   ] most male birds have extremely beautiful feathers, they know how to use them.


18. A: [   ] B:He’s a salesman.


19. The representatives, with cigarettes in their hands, ____ over a few details when suddenly smoke detector set off the fire alarm. 


20. It is true that the surroundings will [   ] one’s work and studies.


21. Among the things that money cannot buy [   ] good health in the mind and body.


22. [   ] the doctor’s warning, he still worked overtime to earn a living.


23. I want to see [   ].


24. She looked immensely [   ] when she learned that her son had survived the crash.


25. In this industry, you really need to keep [   ] if you don't want to be caught off guard.


26. I only wish that all my lectures drew such favorable [   ] as this time.


27. 《Ken》:I have two tickets to the basketball game tonight. Would you like to go? 《Tim》: [   ]《Ken》: Why can’t you go? 《Tim》: I’ve got to hand in a 10-page report tomorrow morning and I’m still working on it.


28. High school students in Taiwan often [   ] that preparing for tests keeps them from having enough sleep.


29. The [   ] of food in this world is unequal. Some suffer from hunger in many areas such as in Africa.


30. Not only the assistant managers but also the secretary [   ] that the company is failing.


31. Having published many important papers, he enjoys a high [   ] as a scholar.


32. Many families are struggling to [   ] during this recession.


33. Most people like to talk about the subjects with [   ] they are most familiar.


34. The original model has been [   ] and replaced by the new one.


35. In the face of energy crisis, scientists worldwide are now exploring ____ energy to replace fossil fuels. 


36. Do you think it good for students to be absolutely [   ] without making any objections in any case?


37. The coach, together with his team players, [   ] warmly welcomed when they got off the bus.


38. Hotel guests who [   ] checking out after 1:00 P.M. should contact the front desk.


39. We don’t need to __ what the future will hold; just focus on the present task. 


40. A:Don’t forget you still owe me fifty dollars. B: [   ]


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


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


43. [   ] are small stores that sell fashionable clothes, shoes, jewelry, etc.


44. No matter what the [   ] will be like tomorrow, I’ll go fishing.


45. I'd [   ] go to the zoo [   ] visit the museum.


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


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


48. The police questioned the [   ] for two hours, but they still weren’t sure whether he robbed the bank.


49. The [   ] from the top of Mt. Kilimanjaro is amazing.


50. 《Clerk》: Can I help you, Sir? 《David》: Yes. I want to buy a pair of jeans, Size L. 《Clerk》: I have several in your size. [   ]《David》: Yes, of course.