When students engaged in group work, the teacher moves around to provide help if necessary and makes sure they are doing the task properly. This is called ______.

A．was a sensualist as well as a moralist
B．looked down upon the pop culture
C．thought content was more important than form
D．blamed the victim of cancer for being repressed

A．mind-blowing
B．slow-witted
C．fun-loving
D．badly-behaved