A．When they are in a hurry.
B．When they are forced to vote.
C．When they dislike all the listed parties.
D．When they don't want to waste their votes.
A．To attend the orientation.
B．To meet his professor.
C．To fmd some books.
D．To use the computer.
A．The name of the author.
B．His student ID.
C．The title of the book.
D．His whereabouts.