A．A class presentation they're preparing.
B．A television program the man is watching.
C．Visiting a close friend of theirs,
D．Studying for a test.

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.