1. The parrot used its strong [   ] to crack open the nuts.


2. The washing machine is not working properly. I have to get it [   ].


3. A: [   ]. What’s been going on? B: What do you mean by that? A:Look. You quit smoking. You no longer drive to work; instead, you use public transportation. And you eat really healthy food. You are going “green.”


4. The interviewers were all very [   ] with the answers the job applicant gave.


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


6. Group registrations are not allowed. Each member must register for the conference    . 


7. It is a [   ] of law to ride a motorcycle without wearing a helmet.


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


9. As __ as it had started, the rain stopped and the sun came out from the blue sky. 


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


11. Shelly prefers red roses [   ] yellow ones.


12. A: Quiet down, or you may disturb the neighbors. B: [   ]


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


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


15. The dentist was ?lling a large [   ] in her tooth.


16. A:I am going absolutely crazy without my mobile phone. It’s been three days and I still haven’t found it. It’s my lifeline. B: [   ]. I don’t know why you are so dependent on it. I don’t have a mobile phone and I am doing just fine.


17. [   ] for the sales in the first quarter may not necessarily be the final sales volume at the end of the quarter.


18. I read about the crime in the [   ].


19. Snow [   ] more solar radiation than liquid water. Therefore, don’t forget to protect your eyes when you go skiing.


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


21. The girl Frank likes has said no to him, so he has no choice but to take [   ] wants to go with him to the party.


22. Any revision of the law should be [   ] with the overall goal of the government's policy. The priority should be placed on the welfare of the citizens.


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


24. I [   ] the floor when the earthquake occurred late last night.


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


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


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


28. We are glad to receive your order for 50 units of classic furniture to be supplied to your own [   ].


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


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


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


32. Tina plans to [   ] children in a remote school in the mountains after college.


33. The president of the United States can only serve two [   ] of four years each.


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


35. Many journalists do not ____ whether or not it is appropriate to interview a child during a tragic event for he/she is usually too young to understand the trauma he/she is involved in. 


36. The team that won the championship was awarded a glittering [   ].


37. Sherlock Holmes [   ] smoke in the air and assumed the killer had not left for too long.


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


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


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


41. I was browsing in the library and [   ] an interesting book on traveling in Alaska.


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


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


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


45. You should always [   ] your opinions politely.


46. In the [   ] of anyone better, we chose him as the leader.


47. I’m a grown man. Don’t talk to me [   ] I were a three-year-old kid.


48. A:I’m hungry. Let’s have lunch. B: OK. What do you want to eat? A:Why don’t we have Italian food? B: [   ]


49. A:Did the doctor tell him to stop smoking cigarettes, or did he do it on his own? B: [   ]


50. George suffered very serious brain [   ] in a car accident.