W: This red shirt is $ 20.00, and the blue one is a dollar more.
M: The black one is twice as much as the blue one.

How much is the black shirt().

A. The man shouldn’t have invited her roommate to the meeting．
B. Her roommate was unable to attend the meeting．
C. The woman forgot about the time change．
D. Her roommate is unreliable about delivering messages．

A. He doesn’t care if it is turned off．
B. He thinks the woman is right．
C. He is reluctant to turn it off．
D. He wants the woman to watch the game, too．