1、As a result of the accident, the e_____ has to be cut off.
2、They built s_____ for the homeless children.
3、We were s_____ when we heard of the news that they would get married soon.
4、They began the r___ work at once.
5、A s___ gas came out of the w___.
6、The mother is very upset. I noticed her hand _____. (shake)
7、It is u___ to argue with him.