A、About 2 hours. B、About one hour. C、Around 1.5 hours. D、Around 2.5 hours. A

W: Masonic Anditorium. Can I help you?
M: Is there a concert on Friday?
W: Yeah, that’s right. Jefferson Starship.
M: And how much are the seats?
W: Five and seven-fifty.
M: And what time does it start?
W: 8:00.
M: And how long does it go till?
W: Till around ten o’clock.
M: Ok. Great. Thanks a lot.
W: Yeah, have a nice day.
8．What is the man doing?
9.How many kinds of prices are there for the concert?
10.How long does the concert last?