_____ the flies out, we had to shut all the doors and windows.
Many people are still ____ the habit of writing silly things ____ public places.
In Hangzhou Mr Green was so struck ____ the beauty of nature that he stayed ____ another night.
He is running ____ the wind towards the east of the station ____ Tom is running ____ the right.
I don't think you can work out the maths problem ____ the teacher's help.
My uncle lives ____ 105 Huanghe Street. His room is ____ the fifth floor.