一、按数字从小到大的顺序给下列单词排序。（只填序号）
A. twelve B. fourteen C. seventeen D. eleven E. nineteen
F. thirteen G. twenty H. fifteen I. eighteen J. sixteen

一、D A F B H J C I E G

二、选词填空，补全句子。
() 1. Six and seven makes .
() 2. A cat has four legs. Three cats have legs.
() 3. I have five oranges. Lily has six oranges. We have oranges.
() 4. We need four English books and ten animal books. We need books in total.
A. twelve
B. eleven
C. thirteen
D. fourteen

二、1.C 2.A 3.B 4.D

三、同学们准备购买文具，根据文具的价格，填写单词。

1. Amy: I need two pens. I pay yuan.
2. John: I have sixteen yuan. I can buy pencil(s).
3. Sarah: I need a bag and a ruler. I pay yuan.
4. Zhang Peng: I need pencil(s) and bag(s). I spend seventeen yuan.
5. Chen Jie: I need pencil(s) and pen(s). I spend seventeen yuan.

三、1. eighteen 2. eight 3. nineteen
4. a/one; a/one 5. four; a/one