1、 To live with a family whose native language is English is the ideal way to further improve one ’s English and to gain （ ） into its culture.

2、 Apart from technological development, the 20th century（ ）an enormous worldwide political, economic and cultural transformation.

3、 There is more to a woman than her looks,so I（ ）the fact that after a woman grows old and loses her looks people stop paying attention to her.

4、 Starting Monday, all foods（ ） “organic”must be up to the strict national standards that the government decided to put into effect now.

5、 Economists are interested in all the factors that can help to（ ）the extent to which a price change will affect supply and demand in the market.

6、 It is（ ）for every family to make earthquake emergency plans and know how to leave the area during the chaos following an earthquake.

7、 It's not unusual for teenagers to go through a(n) （ ） when they feel ashamed of their parents, afraid that they might not live up to their friends' standards.

8、 The project is on the point of collapse, and unless something very（ ）is done to repair the damage there will be no hope for the project.

9、 Ernest Hemingway’s keen insight into his society, ardent love for people and perceptive abilities helped him to form hís own（ ）characteristic of writing.

10、 Not until recently have we realized that the increasing world population may lead to a potential gloomy（ ）for humanity:starvation.

11、 We all know the dangers of an earthquake:the（ ） to buildings, the troubles can be caused by falling trees, and the terror occurs when the earth actually opens up.

12、 It is essential that you start by listening because one of the main（ ）teenagers and their parents face in forming positive relationships is that neither listens to the other.

13、 Being a single parent, there is no way for her to（ ） the time and energy she has devoted to her children for the past 10 years.

14、 Einstein said his scientific discoveries grew from his imagination rather than from （ ） , reason and language.

15、 There is a real need to（ ）academic achievement in schools and help with the development of a student's overall character.

16、 Unlike the practice in China, if you're at a hotel restaurant in the United States, expect a 15-20 percent service charge or add the （ ）amount yourself.

17、 Nearly six million people go to see the Mona Lisa every year, attracted by the（ ）of her smile. When you're not looking at her, she seems to be smiling; when you looking at her, she stops.

18、 It is the development strategy of the company to（ ） its overseas expansion in order to take a slice of the world market.

19、 In our class, most discussions and activities take place in assigned small groups. These groups provide a supportive and safe environment that（ ）learning.

20、 In short, participation in sports is extremely（ ）for college students not only physically but also emotionally and socially.

21、 You can count how many students passed an exam, but psychological and emotional feelings cannot be（ ）measured.

22、 Most parents, in fact, aren't very helpful with the problems that their sons and daughters have in（ ）to their college life.

23、 To help the employees be more communicative,the company is offering workshops for those who may be professionally（ ）but socially awkward.

24、 The lawyer proclaimed they couldn't jump to conclusions because acceptable conclusions must be supported by（ ）facts and evidence.

25、 Moving forward even in the face of great difficulties has become my most important（ ）in my life since it has helped me accomplish something remarkable.

26、 Too much（ ）to dirty air can cause people to suffer from allergies and diseases that will eventually affect people's health.

27、 Researchers put patients through a set of psychological tests to determine the negative consequences of sleep（ ）.

28、 It was reported that there was a vehicle missing every 20 seconds in the US. If the trends continue, experts predict annual vehicle thefts could（ ）two million.

29、 The mayor decided to（ ）his speech in order to leave enough time for his audience to raise questions.

30、 Instead of ignoring or envying successful students,I made it my mission to（ ）the mysterious causes of their success and greatness.

31、 When you are writing any directions for people,you' ve got to be direct and（ ） to make everything rightly understood.

32、 To study a number of subjects in the humanities has been both enjoyable and（ ） , providing me with a new and different perspective on the world in which we live.

33、 The president is in trouble and will have to work hard to（ ） his credibility after people discovered that he was not telling the truth.

34、 She didn't want to marry him and was against him because he had only a bachelor's degree and didn't meet her expectations for marriage.

35、 Western nations have older and shrinking populations since they entered the 21st century and their（ ）birth rates have also posed problems.

36、 Though many things have been changed culturally, there is a commitment and sense of responsibility that have not yet been（ ）in today's society.

37、 Although personally we believe this to be of only secondary importance, its potential role in（ ）innovative acts cannot be ignored.

38、 A strong police force has been placed between the two（ ）groups in the village to prevent fighting and killing.

39、 When employees participated in the problem-solving process, they were much more willing to（ ）solutions to the problems.

40、 The organization has been working with local authorities as well as regional government and officials to（ ）the problem of climate change.

41、 There is a widely held suspicion that the politician, though retired, still has great power and is（ ）events behind the scenes.

42、 My roommate is always very optimistic, and that's why he still（ ）his good humor after all the setbacks.

43、 Many children are addicted to computers, so they often（ ）their parents and play the computer games for hours every day.

44、 He is a very considerate and generous person,and he is also one of those who can often（ ）pleasure from helping others.

45、 The new teaching program was（ ） last semester because the teachers in the department protested its demand for more intense work.

46、 People are concerned about the environment issue because air and water pollution not only affects everyone's health but also makes it difficult for businesses to（ ）.

47、 It is far more effective for parents to allow for the child ’s（ ）and let him make his own choice rather than make a decision for him.

48、 It is a(n)（ ） that in some odd way world peace appears to depend on our spending millions of pounds on weapons that can kill us all.

49、 The“discipline”message asks people to save,while the“enjoy yourself”message asks people to spend; therefore, they（ ）each other.

50、 Dogs cannot distinguish the color of traffic lights, so the master must make the decision of when it is safe to（ ）across the road.

51、 As the finance ministry rejected the deal for its “ lack of clarity ”, it （ ）a complaint with the European Commission that this deal was against the law.

52、 Americans defend the right to obtain a gun,and they have（ ）been willing to turn a blind eye to the harm that people owning guns have caused.

53、 The anger and frustration（ ）by the local people who do not understand what is happening to them will be a terrible and dangerous force.

54、 The committee agreed that his papers（ ）a wider circulation because of their essential and fundamental interest to a larger audience.

55、 State governments and the colleges themselves have（ ）financial help to students with special abilities and those with financial needs.

56、 A number of countries are （ ）their efforts to send out food to the area worst affected by the flood.

57、 As can be probably perceived,a manned trip to Mars may soon（ ）since scientists have achieved the manned moon mission.

58、 Whenever my boss makes a decision that I don't agree with,I tell him what I really think, though it's （ ）to make him happy by telling him his ideas are always right.

59、 When the police caught up with him, Mr.Foster had to（ ）that he'd broken the speed limit.

60、 The change in smoking habits（ ）a change in the incidence of lung cancer. The more people smoke, the more chances of occurrence for lung cancer.