单项选择题
M: Are there any children in the classroom W: Yes, seven are reading at their desks and five are playing on the floor.
A．Five. B．Seven. C．Twelve. D．Seventeen.
A．Two dollars. B．Three dollars. C．Four dollars. D．Five dollars.
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