---- _______ is my pencil case?---- It’s on the desk.
—What are you doing?I’m looking ___ the children. They should be back for lunch.
The teacher told the class to ____ their books.
They are going to have a crazy party ___ Christmas Eve.
Let’s walk over ____ the sun on the other side of street.
—What do you want to do ____ those old boxes?To put things in when I move to the new flat(一套房间).