Teacher: "Harry, what did you do to your paper?"
Harry: "I traced the back edge of my paper."
Teacher: "Jessie, what have you done to your paper?"
Jessie: "I have traced the back edge of my paper."
Teacher: "Each child place the forefinger on the right-back corner of the paper.—Charles, what are you to do?"
Charles: "I am to place my forefinger on the right-back corner of my paper."
Teacher: "Anna, what did you do?"
Anna: "I placed my forefinger on the right-back corner of my paper."
Teacher: "Laurence, what have you done?"
Laurence: "I have placed my forefinger on the right-back corner of my paper."