A．He's taking a break from studying.
B．He has already finished studying.
C．He was assigned to watch a program by his professor.
D．He's finding out some information for a friend.

A．He didn't know that she was enrolled in a linear algebra course.
B．He thought she preferred to study alone.
C．He thought she had made arrangements to study with.
D．He had told her that he had done poorly on a recent test.

A．he and Jennie argued recently.
B．he heard Jennie did poorly on the last test.
C．he doesn't want to bother Jennie so late in the evening.
D．he'd rather study in his own dormitory.