句型转换

1. 昨天他不得不早起床赶公共汽车。    

He          get up early to catch the bus yesterday.  

2. 现在我必须做作业。

I          do my homework now.

3. I had to get up early yesterday.(改为否定句)

I               to get up early yesterday.  

4. She has to clean the room every day. (改为否定句)

She               to clean the room every day.  

5. I can dance and sing. (改为否定句)

I        dance        sing.  

6. The students can eat in the hallway.(改为一般疑问句)    

       the students        in the hallway？