把算式（-8）-（+4）+（-6）-（-4）写成省略括号的形式是[ ]

A.8+4-6-4

B.-8+4-6+4

C.-8-4-6+4

D.8-4-6+4

句型转换。

1. Her mother often made her clean her bedroom. (同义句)    

    She _______ often _______ _______ _______ her bedroom by her mother.

2. We used to keep the classroom clean. (一般疑问句)   

    _______ you _______ to keep the classroom clean?

3. I suppose. Class Three won't win the basket match. (连成一句)  

    I _______ _______ Class Three ____  __  _______ the basket match.

4. Mary's passed the English test, _______ _______ (反意疑问句)

5. He didn't catch the early bus, he felt unhappy. (同义句)

    _______ the early bus made _______ unhappy.