请选择ABCD:c,f1x,w(T7v'a — Is Mary in ? —__________ .4y+g)Z(N7F
A. Sorry , she’s at work .4y+g)Z(N7F
B. How are you ?4y+g)Z(N7F
C. That’s all right .4y+g)Z(N7F
D. How do you do ?4y+g)Z(N7F