根据句意和汉语注释，写出单词的正确形式。

1.Heart trouble is one of the most serious causes of _________（死）among old people.

2.Hundreds of students pushed to get into a room _________（拥挤的）with photographers and TV cameramen.       

3.The exercise was too difficult. It was _________（超过）the abilities of most of the class.

4.The earth is only a baby _________（比较）with many other celestial bodies（天体）. 

The bell for class rang. All the students took out their  1  , waiting for the teacher. Our Chinese teacher, Miss Liu, had told us before that we were going to write a composition 2  class.

A minute passed, and another,   3  the teacher didn't appear. We began to wonder what the matter with her was. Was she ill? Or had she forgotten about the class?    4  could tell. Soon some students began to study other subjects, some students began to talk and even made  5  .

About ten minutes later, the door opened and Miss Liu   6  came in, smiling. She didn't say sorry to the class. We felt   7  angry. The teacher often told us never to be late for class and said it was   8  manners to be late. She also said that if we were late, we should make an apology (道歉)   9  at once or after class. But now she was late and had kept the whole class waiting for such a long time and didn't even tell us the reason. It was unfair. At this moment, Miss Liu picked up a piece of chalk(粉笔) and     10     "Teacher IsLate" on the blackboard and said that was the topic of our composition today. All of us smiled and understood what the teacher meant.

The bell for class rang. All the students took out their  1  , waiting for the teacher. Our Chinese teacher, Miss Liu, had told us before that we were going to write a composition 2  class.
A minute passed, and another,   3  the teacher didn't appear. We began to wonder what the matter with her was. Was she ill? Or had she forgotten about the class?    4  could tell. Soon some students began to study other subjects, some students began to talk and even made  5  .
About ten minutes later, the door opened and Miss Liu   6  came in, smiling. She didn't say sorry to the class. We felt   7  angry. The teacher often told us never to be late for class and said it was   8  manners to be late. She also said that if we were late, we should make an apology (道歉)   9  at once or after class. But now she was late and had kept the whole class waiting for such a long time and didn't even tell us the reason. It was unfair. At this moment, Miss Liu picked up a piece of chalk(粉笔) and     10     "Teacher IsLate" on the blackboard and said that was the topic of our composition today. All of us smiled and understood what the teacher meant.

根据所给提示，完成句子。每空一词，含缩略词。

1.Mary and Tom are used to living in this big city now. (改为否定句)

Mary and Tom                         to living in this big city now.

2.Students should learn everything by thinking alone. (对划线部分提问)

____________ ____________ students learn everything?

3.At first, Teresa was too nervous to talk in front of the class. (改为同义句)

At first, Teresa was              nervous            she couldn’t talk in front of the class.

4.Sara’s hair is too long. She needs to cut her hair. (合并为一句)

Sara needs to             her hair            .