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—It's Sally's.
Paul and Peter are good friends. At school they are good students. Today they help their teacher Miss Li clean their classroom after school. What a messy classroom! There are some pieces of paper on the floor. The desks are not in a line. The windows are dirty. Paul and Peter first clean the floor and windows. Then they tidy the desks. Now the classroom is clean. "You are great, Paul and Peter. Thank you, "says Miss Li.
Whose umbrella is this, Paul?
Are these caps yours, Peter?
The room is now clean and tidy.
The black socks are mine.
Where can 1 put the crayons?
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