1.he        2.they        3.we        4.you        5.she        6.it         7.I      

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.