A: What about having a drink B: ______

A．has gotten used to seeing messages on the billboard
B．thinks that it is not acceptable to have chalkings on the ground in an institution of higher learning
C．is looking for a good policy which can guide the way of students’ message posting
D．has decided to chalk some messages to fight against the harassing ones

A．I’m afraid you have the wrong number.
B．I’m sorry, but I’ve got nothing to let.
C．Yes, speaking.
D．I’m afraid he is not available right now.