A．It has been the bestseller for weeks.
B．It is being sold at a very low price.
C．It advises people to change themselves.
D．It distinguishes co-operators.
A．Someone who always talks about himself.
B．The most violent type of co-workers.
C．Someone who stabs your back.
D．The most common annoying type of people.
A．His schedule of courses is too heavy.
B．It's not what he expected.
C．He doesn't like the professor.
D．He can't pay for so many credit hours.