1. (2016八上·瑞安期中) 结合句意用方框内所给的单词的适当形式填空。（每词限用一次）

population      classmate    twenty     quickly     crowded

1. （1） Tony went to London with his two .

3. （2） The dining hall is at noon in my school.

5. （3） Don't speak so , I can't follow you.

7. （4） The of China is over 1.3 billion.

9. （5） Today is my brother's birthday.