— Excuse me, would you please give_________ magazine to Mary?

— Sorry, but I don’t think there is_________ Mary in my class.

A．a; /

B．the; /

C．the; a

D．a; a

巢穴风篱式住所在地面上有风篱挡风，在地面有地穴，在树上有巢居的树屋。