-- _____is that used for?---_____ the floor.
____of danger in the street at night, she had to go home, with a friend ___ her.
the website of the Fire Department in your city, and you will learn a lot about firefighting.
The teacher stressed again that the students should not _________any important details while retelling the story.
As he works in a remote area, he visits his parents only _________.
Though having lived abroad for years, many Chinese still______ the traditional customs.