ReadOasis Step 2

The bell rang. And the students sat at their desks waiting. The teacher was late. The clock ticked and ticked. Finally, 13 minutes after the bell, the teacher entered the room. But strangely, he was pulling a big object into the class. 

The students watched in shock. A student in the back whispered, "What is he pulling into the class?" As he entered, the students finally saw it. The teacher pulled a large can -- full of smelly garbage -- into the room. 

T...