1. 根据语境从方框中选择恰当的单词填空，有的需要变换形式。

pool,    row,    our,    tie

1. （1） Mr Green always wears a white shirt and blue at work.
3. （2） The children are standing in a(n) in front of the classroom.
5. （3） There are some boys swimming in the .
7. （4） —Is this your school?

   —No. is newer than this one.