____, are you Mr. Green?           - Yes.

A. Please           B. Hello          C. Sorry            D. Excuse me

---____, are you Mr. Green?          

--- Yes

1. A.
   Please
2. B.
   Hello
3. C.
   Sorry
4. D.
   Excuse me

---______ Are you Mr Green?— No,I'm not．

---______．

1. A.
   Excuse me;Excuse me
2. B.
   Sorry;Sorry
3. C.
   Excuse me;Sorry
4. D.
   Sorry;Excuse me