1. Tom is ______than Jack (calm).
2. Lin Peng is a little ______than me (outgoing).
3. My brother is not as ______as I am (athletic).
4. She has ______chicken than I do (much).
5. My cousin is ______at English than I am (good).  
6. Liu Li has ______books than I do (many).
7. My bag is too______, I can't take it home myself (heavy).
8. Jack is good at schoolwork, he is very ______(serious).
9. In some ways, they look ______(different).
10.It's ______for us to learn physics well (necessary).

1. Whatever he did, he could do best. (改为同义句)
    _______ _______ what he did, he could do best.
2. I know the boy. He speaks English well. (改为复合句)
    I know the boy _______ _______ English well.
3. I hope that I can visit Beijing some day. (改为同义句)
    I hope _______ _______ Beijing some day.
4. My brother is not old enough to join the party. (改为同义句)
    My brother is _______ ______ to join the party.
5. We clean our classroom twice a day. (改为被动语态)
    Our classroom _______ _______ twice a day.