1. B)根据语境从方框中选择恰当的短语填空，有的需要变换形式，每个限用一次。

make noise，in person，one day,look down，on air

1. （1） Our head teacher took part in the meetingbecause it was very important．
   

3. （2） The girlat the dog and smiled at it．

5. （3） You can'tin some public places，for example，the library．

7. （4） —What does it mean when the red light is on?

   —It means we're．

9. （5） I believe that your dream will come true