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


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


3. Like [   ] other language skills, reading requires practice.


4. The audience enthusiastically [   ] the pianist on her amazing performance.


5. With a big family to support, John has been [   ] trying to get a job for months, but has not found one yet.


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


7. A [   ] has four corners.


8. [   ] and blurred, it is extremely difficult to recover his sight.


9. In the box [   ] some photos that I took when I was on the trip.


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


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


12. Many runners aim to run like an [   ] .


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


14. Foreign-trained employees have to [   ] their learned skill-sets to the local market.


15. The social welfare system ____ provide the underprivileged people with sufficient support. 


16. My mother [   ] for me when I arrived home last night.


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


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


19. According to our justice system, the suspect will be considered [   ] until proven guilty.


20. The congressmen have reached a ____ that smoking should be banned within thirty feet from the entrance of a building. 


21. The western coalition is trying to [   ] Libya’s air-defense system to protect civilians and help rebel forces.


22. Though unwilling to follow his father’s footsteps, Jason still [   ] the family business when his father passed away.


23. With all things [   ] into consideration, I think we’d better give up the plan.


24. The production of bread mainly includes the [   ] such as flour, sugar and eggs.


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


26. A: Do you mind if I invite Kevin to our party? B: [   ]


27. It is hard for me to [   ] the smell of Chanel No. 5 perfume.


28. He went to a [   ] high school to get practical knowledge and job-related skills.


29. To [   ] road accidents, we should always follow traffic rules.


30. Where are you going? I’m going to the [   ].


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


32. The nurse supported the sick child because he was too weak [   ] by himself.


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


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


35. More advances in technology [   ] in the last decade than in any other time in human history.


36. 《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.


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


38. Jeff got a perfect score on the test; he [   ] diligently.


39. Imagine [   ] an extra day off this weekend. That would be great.


40. 《Linda》: Alex, it’s your turn to do the dishes, isn’t it? 《Alex》: [   ]《Linda》: You know very well that I did the dishes last night.


41. He moved to the countryside as soon as he retired. However, he found himself unable to [   ] to country life because it was not so convenient as living in the city.


42. A student's frequent absence from school is often a clear [   ] of his problem in life and study.


43. 《Man》: Officer! Wait, officer! That’s my car! 《Police》: Oh, it is? Then I won’t need a tow truck. 《Man》: No! [   ]《Police》: Good. It’s illegal to park beside a fire hydrant.


44. 《John》: How often do you exercise? 《Amy》: [   ] 《John》: That’s great. No wonder you keep in good shape.


45. The shopping [   ] policy aimed to stimulate consumption in order to boost up droopy economy.


46. What [   ] at noon yesterday? I called but couldn’t get hold of you.


47. I am very thirsty. May I have some more [   ]?


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


49. All branch stores are required to fill out the ____ report to check if there is enough merchandise on shelf and in stock. 


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