M: Tickets are six dollars for adults. Children’s tickets are half price.
W: OK, I’d like two adult’s and two children’s, please.

How much does one child ticket cost（）

A．Linda and Prof. Green feel so shocked to meet each other.
B．Linda is a bit shy about Prof. Green’s remarks about her.
C．Linda and Prof. Green haven’t seen each other for quite some time.
D．Prof. Green will buy an expensive present for Lind

A．Register for a evening club.
B．Attend an evening party.
C．Enroll for an evening class.
D．Sign up for a contest.