21. Secretary: Good morning, XYZ Company. May I help you?
Mr. Clinton: Yes. Is Mr. Bush there?
Secretary:
_______________
Mr. Clinton: Yes, please. This is Bill Clinton. Please tell Mr. Bush to call me back. My phone
number is 361-6599.
(A) Speaking.
(B) He is not in now. May I take your message?
(C) I am his secretary. Please wait.
(D) Mr. Bush is on the phone. Who is this?