1. The blue bag is the biggest of all. (对画线部分提问) 
     _____ _____ is the biggest of all?
2. He does his homework at home every day. (改为一般疑问句) 
    _____ he _____ his homework at home every day?
3. They are watching TV at home now. (改为同义句)
    They are watching TV at home_____ _____ _____.
4. Tom is a good student. Mary is a good student, too. (合为一句) 
     _____ Tom _____ Mary _____ good students.
5. Sarah went home after the rain stopped. (改为同义句)
    Sarah _____ _____ home _____ the rain stopped.