把这些句子改成简单句,
问题描述：
把这些句子改成简单句,
1.The teacher came into the classroom and there were two books in his hands.
2.As he was tired and hungry ,the man was unwilling to move on.
3.THe girl couldn't help crying when she heard her mother's death.
4.While you are crossing the street ,you should be careful.
答
The teacher came into the classroom with two books in his hands.
Tired and hungry,the man was unwilling to move on.
When hearing her mother's death,the girl couldn't help crying .
You should be careful while crossing the street.