阅读下列各小题，根据括号内的汉语提示，用句末括号内的英语单词完成句子，并将答案写在答题卡上的相应题号后。

71．Expo 2010 Shanghai China ____________________ (在召开)on both banks of the Huangpu River in the city of Shanghai, China, from May 1 to October 31, 2010.（hold）

72．The official song of the 2010 World Cup in South Africa titled Waka Waka features many musical elements that_____________________（追溯到）the ancient times.(date)

73．He looks sleepy. He must_____________ (熬夜了)last night, writing the essay. (stay)

74．— Is Bob still performing?

— I’m afraid not. He is said ______________（离开）the stage already as he has become an official.(leave)

75．_________________ (适应) the tropical heat was more difficult than they had expected. (adjust)

76．When the survivor woke up, he wanted to know      ____________      (是谁) that saved him from that burning house. (who)

77．The more ways we have of looking at a problem , ____________________ （越有可能）that we can find a solution. (likely)

78．His younger sister teaches in a secondary school, in front of      _______________     (流淌着一条小河). (flow)

79．It is possible that the King of Stonehenge was linked to the stones: he __________________

(很可能参与了) in planning the monument, or in helping transport and pull up the stones. (hand)

80．Representatives attending Copenhagen Conference recommended that  _______________    (采取严厉措施) to reduce carbon emission. (take)

—Where is Bob? I cannot find him anywhere.

—He        have been off long. I heard him make a call just now.

A. shouldn’t      B. can’t           C. mustn’t        D. needn’t

阅读下列各小题，根据括号内的汉语提示，用句末括号内的英语单词完成句子，并将答案写在答题卡上的相应题号后。

71．Expo 2010 Shanghai China ____________________ (在召开)on both banks of the Huangpu River in the city of Shanghai, China, from May 1 to October 31, 2010.（hold）

72．The official song of the 2010 World Cup in South Africa titled Waka Waka features many musical elements that_____________________（追溯到）the ancient times.(date)

73．He looks sleepy. He must_____________ (熬夜了)last night, writing the essay. (stay)

74．— Is Bob still performing?

— I’m afraid not. He is said ______________（离开）the stage already as he has become an official.(leave)

75．_________________ (适应) the tropical heat was more difficult than they had expected. (adjust)

76．When the survivor woke up, he wanted to know      ____________     (是谁) that saved him from that burning house. (who)

77．The more ways we have of looking at a problem , ____________________ （越有可能）that we can find a solution. (likely)

78．His younger sister teaches in a secondary school, in front of      _______________    (流淌着一条小河). (flow)

79．It is possible that the King of Stonehenge was linked to the stones: he __________________

(很可能参与了) in planning the monument, or in helping transport and pull up the stones. (hand)

80．Representatives attending Copenhagen Conference recommended that  _______________   (采取严厉措施) to reduce carbon emission. (take)

Americans think that travel is good for you. Some even think it can help to solve one of the coun­try ’ s worst problems ~: crime (犯罪）.

Crime worries a lot of people. Every year, the number of crimes is up and up. And many criminals (罪犯）are young. They often come from sad homes, with only one parent or no parents at all.

There are many young criminals in prison，but prison doesn ’ t change them. Six or seven in ten will go back to crime when they come out of prison.

One man ,Bob Burton, thought of a new idea. In the old days, young men had to live a difficult life on the road. They learned to be strong and brave, and to help their friends to be strong and brave, and to help their friends in time of danger. This helped them grow into men. So Bob Burton started “Vision Quest. “ He takes young criminals on a long ,long journey with horses and wagons (马车）， 3,000 miles through seven states. They are on the road for more than a year.

The young people in Vision Quest all have bad problems. Most of them have already spent time in prison. This is their last chance.

It's hard work on the road. The day starts before the sun comes up. The boys and girls have to feed the horses. Some of them have never loved anyone before  but they love their horses. That love can help them to live a new life.

Not all the young people on Vision Quest will leave crime behind them. Three or four in ten will one day be in prison again. Bob Burton is right. Travel can be good for you. Even today, Americans still say, “ Go west, young men. ”

1.In the last paragraph “leave crime behind them" means    .

2.Why is Bob Burton right?

3.Form the passage we may infer that   .

4.    On “ Vision Quest"   .

5.Americans still say, "Go west, young men. ”because .

—Where is Bob? I cannot find him anywhere.

—He        have been off long. I heard him make a call just now.

A. shouldn’t      B. can’t           C. mustn’t        D. needn’t