填空。
1. Tom is_____(tall) than Jim.
2. Who is________(old), Ann, Ken or Mary?
3. Peter is the_______(heavy) boy in his class.
4. Which is_________(long), Huanghe or Changjiang?
5. Changjiang is the__________(long)river in China.
6. This elephant is__________(big) than that one.
7. Which girl is the__________(thin), Ann, Lily or Kate?
8. Ann is________ (young). Lucy is_________ (young) than Ann. Lily is __________ (young) than Lucy. So Ann is the______and Lily is the__________.
9. ________ ________ do I weigh?   You weigh 67kg.
10.-- ________ ________are you?
--I am 152 _______ ________.
11.One day, Ann ________(take) Mocky to the town.
12. They checked their______(weigh)and________(high).
13.He ________(measure) Mocky first.
14. Ken ________(weigh) Ann and Mocky.
15. --How much ________he weigh?    --He ________(weigh) 45kg.