20页：
A部分：1~5：DBCCA
B部分：1~5：ABACC
21页：
C部分：1~5:FTFFT
22页：
A部分：1）live 2)pracitses 3)gets 4)starts 5)finishes 6)finishes 7)has 8)eats 9)eats 10)weight
B部分：1）always do homework.2)often playing football with his friends.3)usually go to bed at 10P.M.
C部分作文：仅供参考(根据实际情况回答）：
I enjoy school from Monday to Friday. I usually watch television after finish my homework from Monday to Thursday. On Friday ,I always play computer games with my friends.