1. They can hardly do the things they like. (改为反意疑问句)
    They can hardly do the things they like ______ ______?
2. I have been collecting stamps for many years. (对画线部分提问)
    ______ ______ you been collecting stamps?
3. We saw him go into a shop yesterday afternoon. (改为被动语态)
    He was ______ ______ go into a shop yesterday afternoon. (同义句改写)
4. If you don't study hard, you will fall behind others. (同义句改写) 
    ______ you study hard, you ______ catch up with others.
5. She became strong day by day as he took exercise. (同义句改写)
    The ______ exercise she took, the ______ she became.

1. Don't bring friends from other schools, or  the teachers will ask them to leave. (改为同义句)
    _____ _____ bring friends from other  schools, the teachers will ask them to leave.
2. I will play volleyball if it is fine tomorrow. (对划线部分提问)
    _____ _____ you _____ if it is fine  tomorrow?
3. The students stood there and didn't know  what they should do next. (改为同义句)
    The students stood there and didn't know_____ _____ _____ next.
4. They are going to do more practice. They will  win the match. (改为含有if条件句的复合句) 
    They_____more practice, they _____ _____ the match.
5. If you study hard,  you'll catch up with  others. (改为并列句)
    _____ _____, or you'll fall behind others.