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


2. We have been waiting for Jack for almost two hours. I wonder [   ].


3. 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.


4. 《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.


5. I don’t know [   ]of the people in this room. Can you introduce each of them to me?


6. The piano is one of the most popular musical [   ] today.


7. A:I have told you a thousand times to clean up the mess in your room. B: [   ]. A: I would like to hear about it. B: My littered desk and floor show that I am embarking on creative work. I don’t see the necessity of investing all my time to clean things up


8. Not until Toyota debuted the model Prius in the late 1990s ____ the technology of hybrid engine. 


9. Many of our character traits are not tested [   ] we are in a difficult situation.


10. My sister knows many passages from Shakespeare [   ]; she can memorize the details of his plays.


11. Our teacher always tells us that knowledge should be [   ] through years, not gained in one day.


12. How much do you guess [   ]?


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


14. A: Can you visit us in New York over Christmas? B: I really want to, but I don’t think I can. A: [   ]. What’s the problem?


15. Time [   ] quickly, so you’ll need to use it wisely.


16. The supervisor was so [   ] of the new idea that his staff proposed that it was never put into real practice.


17. Mary is never absent and always studies hard, so she [   ] as one of the excellent students in her class.


18. You should always [   ] your opinions politely.


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


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


21. This Italian restaurant is the [   ] place to eat in the city.


22. The museum’s main hall __ an enormous book, and its restaurant looks like a big cake. 


23. The habit of doing extensive reading helps to lay the __ of children’s writing skills. 


24. This machine is [   ]. All you have to do is turn it on and it will operate by itself.


25. I remember you. You [   ] to go to school here.


26. [   ] your dreams come true, you need to work harder.


27. The total number of the staff is [   ] larger in our company than that in yours.


28. Before the final exam, our teacher taught us how to use our time [   ] while preparing for tests.


29. Ms. Johnson was busy [   ] the house when the postman came.


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


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


32. The Ministry of Finance announced tax __ for the victims of the 921 earthquake and of typhoon Toraji. 


33. From a poor family, Joanna has never dreamed of studying abroad because she knows that it would [   ].


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


35. My brother is very [   ]; he won’t give up easily.


36. We [   ] tell John about the accident, shouldn’t we?


37. A: Is the treasurer in his office every day? B:Oh yes. [   ] he must sign all checks, he must be here all the time.


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


39. The air traffic controller informs the pilot how far [   ] from the touchdown point.


40. A: Are you excited about your first day of work? B: Of course. That’s my first job. A: How are you going to the office? B: [   ]


41. After being bitten by a [   ] snake, John was sent to a hospital.


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


43. A:Hey, Paul. I see you walking lame all the way. [   ]? B:Nothing. I just sprained my ankle while playing basketball the day before yesterday.


44. A: What are you doing this weekend, Emma? B: [   ]


45. Under no circumstances [   ] accept his proposal of buying our factory.


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


47. Although experts agree that it is vital to eat a good breakfast, not many people are [   ] their advice.


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


49. Many college graduates fight their way into the renown and     companies for better career advancement. 


50. Which fruit is this country famous for, bananas or [   ] ?