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


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


3. Anna has been asking Henry to eat more healthily but he hasn't been [   ] by her arguments.


4. I’d like to take [   ] of this opportunity to thank you all for your co-operation.


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


6. The freeway is now [   ] to motorists after it was blocked off by a huge landslide yesterday.


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


8. John doesn’t speak French, and [   ].


9. The farmer put a lot of [   ] on his rice field, hoping that the crops may flourish.


10. Shelly prefers red roses [   ] yellow ones.


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


12. We have been [   ] of the law firm for many years and are satisfied with the legal services provided.


13. This brand of detergent is your best choice because it [   ] the toughest stains and won’t fade colors or damage fabric.


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


15. I remember [   ] the movie with Tom last year. It is very good.


16. Defined most broadly, folklore includes all the customs, beliefs, and traditions that people have __ from generation to generation. 


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


18. Reading detective stories is one of Steve’s favorite [   ].


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


20. Jack [   ] to help clean the classroom after school. Everybody is surprised because he is usually very lazy.


21. How much do you guess [   ]?


22. Parents with [   ] daughters and sons can bring up the problems they had with their 13 to 18 year-old children at the meeting next week.


23. As the project depends on [   ] at the federal level, the city and county may have to wait until the budget cutting ends.


24. If you pay your bills on time, you will have good __. 


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


26. The escaping criminal [   ] himself as an old security guard, so the police failed to recognize him at first sight.


27. In the face of energy crisis, scientists worldwide are now exploring [   ] energy to replace fossil fuels.


28. Due to the winter storm, hundreds of flights were [   ] and many passengers had to stay in airports.


29. There were hundreds of [   ] at this ball game.


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


31. Today is a beautiful day, [   ]?


32. Mark has been recording his daily activities in his [   ] since he was 10.


33. Gardening is my mother's favorite [   ]. She loves to spend time taking care of the flowers.


34. Tom comes from a wealthy family, but John does not. In spite of their different [   ], they have become best friends.


35. The corporation began sponsoring charity events so that its public image [   ].


36. In the movie, all the stuffed animals came [   ].


37. “What are you reading in that magazine?” “An article which [   ] fishing.”


38. The minimum [   ] is the lowest amount of money an employer is allowed to pay an employee.


39. The [   ] you work, the [   ] you will succeed.


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


41. On the average, a healthy heart [   ] to pump five tablespoons of blood with every beat.


42. Volcanic [   ] grounded thousands of passengers and fliers across Europe last year.


43. A:Why did Judy leave? B: [   ]


44. Many people in the U.S. are staying away from restaurants, skipping vacations and [   ] on buying new cars.


45. He went for an ocean voyage and __ his health. 


46. __ and blurred, it is extremely difficult to recover his sight. 


47. Joe is really [   ] about the party tonight. He’s making lots of preparations to make sure everyone can have a good time.


48. Mrs. Lin told Jane that she had to clean up her room and empty the dishwasher before she could leave for the game. Jane promised her mom that she [   ].


49. I just learned that Tivoli Gardens in Copenhagen, Denmark was the ____ for the original Disneyland in L.A., California.  


50. The Review Board could be considering ____ the grants given to several non-governmental organizations.