Complete the sentences with the words in their right forms（用括号中所给单词的适当形式填空）：

阅读下面短文，根据短文内容，从方框中选出恰当的单词，将其正确形式填入短文空白处。（每词限用一次）

A professor(教授) told his students to go into the city slums(贫民窟) to study the life of 200 boys. He asked them to write reports about each boy’s 1ife and future. One of the students wrote, “They don’t have   1.    hope．”

Twenty-five years later， 2.   professor read about the earlier study. He told his students to find out   3.    had happened to the boys. They tried very hard and   4.    that 176 of the boys had become successful as doctors, teachers and scientists.

The professor was very surprised and   5.   to study it further．Luckily, all of them were living near the place and he was able to ask each one, “What made you successful?” Each one answered, “It was a   6.   .”

The teacher was   7.   living there, so the professor found her and asked the old woman what she had done to   8.    those boys out of the slums, and change them into   9.   people.

The teacher's eyes began to shine and said   10.    a sweet smile, “It's really very easy. I love those boys.”

根据下列句子及所给单词的首字母写出所缺单词。在填写答卷时，要求写出完整单词。（每空限填一词）

1.David can r__________ very fast. I’m sure he will win the race at the sports meeting.

2.It’s dangerous to swim in the r___________. It’s safer to go to the swimming pool.

3.Animals are useful. For example, we can get fresh m__________ from cows.

4.Your voice is very sweet. Would you s_________ a song at the English party?

5.Yao Ming, one of China’s best ever basketball player, is more than 2 meters t________.

根据首字母及汉语提示，完成下列单词的拼写，使句意明确，语言通顺。

1.What do you like to do in your f______(空闲的) time?

2.I could hear her sweet v______ (噪音) from the next room.

3.Travelling by plane is expensive, but it s______ (节省) time.

4.Would you please make a shopping l________ (清单) for the picnic?

5.It's polite to k______ (敲) on the door before entering a room.