—Hey, Mr．Smith, you are wanted on ______ phone.
   —Who is calling?
   —______ Mr. Green. I don't know who he is.
      A．不填; A      B．the; 不填        C．the; A       D．不填; 不填

A.Smith,
B.

C.

D.不填;
E.the;
F.the;
G.不填;