1. Thanks for taking care of my sister. 
    Thanks for _____ _____ my sister.
2. How about playing football after school?
   _____ _____ playing football after school?
3. We had fun at the party.
    We _____ a good_____ at the party.
4. Don't forget to clean his bed.
    _____ _____ clean his bed.
5. I disagree with them.
    I _____ _____with them.
6. The stone is so heavy that I can't lift it up.
    It is _____ a heavy stone _____ I can't lift it up.
7. Jim didn't know what he should do next.
    Jim didn't know _____ _____ _____ next.
8. Shall we go for a picnic tomorrow? 
     _____ _____ going for a picnic tomorrow?
9. It took him two hours to play computer games last night.
    He _____ two hours _____ computer games last night.
10. She got a letter from her pen-friend last week.
     She _____ _____ her pen-friend last week.

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.

1. How about the weather? (改为同义句)
    _____ the weather?
2. I thought he would go to college the next year, _____? (完成反意疑问句)
3. I really don't know what I should do about it. (改为同义句)
    I really don't know_____about it.
4. Stop talking in the reading room, _____? (完成反意疑问句)