句型转换。
1. I was at home last night. (改为一般疑问句)
    _____ _____ at home last night?
2. I did my homework yesterday. (改为否定句)
    I _____ _____ my homework yesterday.
3. She went to London on vacation. (对画线部分提问)
    _____ did she _____ on vacation?
4. He watches TV every Sunday evening. (用now改写)
    He  ____ _____ TV now.
5. Scott came back home on foot. (改为同义句)
    Scott _____ back home.