Tommy and John were hot and sweaty as they sat outside the
 principal's office. Dirt smeared both of their faces, and they could
 hear their teacher's voice as she gave Mr. Jones her account of
 what had happened. Tommy sneered at John, and John returned
 the angry glare. As Miss Brown lefdmr. Jones' office, the boys
 hung their heads so they wouldn't have to look her in the eye.
 From this paragraph you can infer that