One afternoon, when the lessons were over, John and Mike Green didn’t go home. They (11) in school to help their teacher. The

One afternoon, when the lessons were over, John and Mike Green didn’t go home. They stayed in school to help their teacher. Their teacher was starting a library in the school and the boys helped him to carry some books. They worked for an hour. Then the teacher said, "Thank you, boys, we will finish the work tomorrow. Now you must go home." When the boys got home, it was seven o’clock. It was dark outside but there was a light inside their home and the door was open. They could see a man inside.