单项选择题

[听力原文]6-7
M: Hey Ellen! How are you
W: I’ m fine, Bob, aren’ t you glad that the semester is over
M: Yes! Are you going to the rock concert Friday night
W: I hadn’t thought much about it. Are you
M: Sure. Would you like to go with me
W: Sounds like fun.
M: You’ Il have to buy your own ticket though.
W: Are you broken again Let me treat you.
M: Wow! When did you come into so much cash
W: You know, I’m a waitress at the student center. Any way now those final exams are almost over. I’ d love a night out.
M: Since you’ re being so great about buying the tickets, why don’t I take us out to dinner

What is Bob going to pay for（）

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