1. Volcanic __ grounded thousands of passengers and fliers across Europe last year. 


2. A: Hey, do you have a minute? B: [   ]


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


4. The factory workers [   ] that their workload was too heavy but the pay was too low. They decided to stage a protest.


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


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


7. Dr. Wilson, [   ] is the CEO of the company, will be here to give a speech at the opening ceremony next week.


8. Climbing unemployment rates and dropping job opportunities are huge __ to the new government. 


9. It seemed that the walls    . 


10. Ever since childhood, Marnette had always wished she [   ].


11. I’m not [   ] you! Our team has just won both the gold medal and the silver medal.


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


13. I like this apartment better. It’s cheap, and [   ], it’s near my office. I can walk to work.


14. I am looking forward to [   ] from you at your earliest convenience.


15. 《Susan》: I'm going to Tokyo on vacation next week. 《Alice》: Oh, how nice! [   ] 《Susan》: Thanks a lot.


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


17. From now on, any employee who is usually late for work will be [   ].


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


19. Jim is very [   ] and dynamic; he enjoys physical activities and you can seldom see him stay still for more than ten minutes.


20. [   ] help us fly kites in spring and cool us in summer.


21. Most of the people in my office want to stay [   ], so they exercise regularly.


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


23. If Sonia [   ] sorry for being late, she’d have apologized to me by now.


24. __ the election is the question both political parties are asking. 


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


26. It is essential that officials at all levels of government refuse to accept [   ] from business interests.


27. Look! Here is a new [   ] bill.


28. Paul was charged with [   ] driving after he was arrested for running over an old man.


29. English is important in Taiwan, [   ] for business people.


30. Yani Tseng, who won several ladies professional golf championships, spent [   ] of time practicing golf before she became so successful.


31. We stood at different locations when the accident happened. His [   ] of the accident was very different from mine.


32. The city now looks very artistic and refreshing because it is [   ] with many colorful and well-crafted sculptures.


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


34. Janet put forward the proposal that the program [   ] until Mr. Brian Reynolds came back from abroad.


35. Accounting is a profession [   ] has always interested me.


36. The luxury tax is set to [   ] on July 1, but it has already dampened enthusiasm in the real estate market.


37. Many couples wanted a divorce but could not have one because their case was not covered by any [   ].


38. Don’t buy me a whole cake. A __ will be enough. 


39. [   ] in 1952, the MIT Sloan School of Management is one of the world’s most prestigious business school.


40. The patient appreciated [   ] breakfast in bed when she wasn’t feeling well.


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


42. Keep in mind that smoking is strictly [   ] when you are handling explosive materials.


43. She claims to be an advocate of animal rights. [   ], she is always wearing fur and carrying a crocodile-skin purse.


44. A: Could you run over to the store? We need a few things. B: [   ] What do you want me to get? A: Well, could you pick up some sugar and a few oranges?


45. 《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.


46. The exact number of the audience is still unknown, but it is [   ] that there are around 10,000 people in the theater right now.


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


48. A lot of heavy smokers [   ] lung cancer every year.


49. Neither the teacher nor his students [   ] in the classroom last night.


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