用括号内所给单词的适当形式填空。
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).
