67. Joe did the homework in the classroom yesterday. (改为一般疑问句)

　 ________ Joe _______ the homework in the classroom yesterday?

68. Tom spent two hours finishing his report last night. (保持句意基本不变)

　 It __________ Tom three hours __________ finish his report last night..

69. The students in our class help the old lady clean her house once a week.(就划线部分提问)

　　 __________ ___________ do the students in our class help the old lady clean her house?

70. The teacher didn’t use the blackboard yesterday. He used a computer.(合并为一句)

　 The teacher used a computer ________ ________ the blackboard yesterday.

71. Anna invited me to her birthday party last month. (改为被动语态)

　 I ________ _________ to Anna’s birthday party last month.

72. Sometimes children are so young that they can’t tell the bad from the good. (保持句意基本不变)

Sometimes children are ________ young ________ tell the bad from the good.

73. "When will we have a spring outing? " asked the students. (改为宾语从句)

The students asked ________they _________ have a spring outing.

    When I was a child, my mother often told me, “Don’t run around, or bad uncles will grad（抓住） you. And you know what? You will never see Mum and Dad again.”

    “Why, Mama? Why would these uncles grab me?” I would ask. “The city is a dangerous place and we don’t trust any strangers, ”she would reply.

  Well, that might answer the question of why my second brother never picks up calls from an unknown person either on his mobile or his home phone. It seems that he doesn’t care if he misses an important call. because he thinks that all unknown calls are from bad persons.

    So, have we given too much protection to our young kids? Perhaps it is so. But the adults’ thoughts are indeed easy to understand. The kids meet swindlers sometimes as we adults tell them. Also they get some news about cheating（欺骗） in newspapers or on TV every day. That makes the kids believe that they just cannot trust strangers.

    Let’s look at an example from everyday life. Say, if someone carrying a wooden stick（棍子） comes nearer to you, will you try to run away at once even before he or she starts talking to you? Will you guess this person’s intentions（意图） and think that he or she wants to rob（抢劫） you of something? Think of the answer for yourself.

    Of course, the kids should look after themselves, but overprotection can sometimes stop them from making new friends. Sometimes it’s not good for their new friendships.

    Trust is like a mirror. When we offer trust to people, they might just show you trust in return.

1 What do “swindlers” probably do?

  A. They cheat other people.

  B. They often call other people.

  C. They rob people of something.

  D. They teach children to protect themselves.

2 Which of the following is NOT the reason why children don’t trust strangers?

  A. Their parents tell them not to trust strangers.

  B. They get to know some news about cheating in newspapers or on TV every day.

  C. Strangers always have bad intentions.

  D. They sometimes have experiences of being cheated.

3 What does the writer want to tell us?

  A. Children should always follow their parents’ advice.

  B. We should never talk to strangers.

  C. Parents should learn to protect their children.

  D. People should try to trust each other.