Questions 22 to 25 are based on the conversation you have just heard.

A．Cancel their assignment.
B．Allow them to hand in their assignment a few days later.
C．Help them to write part of the assignment.
D．Explain to them what the assignment was.

A．It stands for hostility.
B．It is not normal.
C．It is an invasion of space.
D．It means intimacy between two people.