问题补充：
---Hello, may I speak to Mary please? --- .
A. I’m Mary.
B. Yes, please.
C. Who are you?
D. Hold on, please.
答案：
A. I’m Mary.
B. Yes, please.
C. Who are you?
(答案→)D. Hold on, please.
解析：句意：——你好，我可以找玛丽接电话吗？——请别挂机。A. I’m Mary. 我是玛丽。 B. Yes, please.是的，请。 C. Who are you?你是谁？ D. Hold on, please.请稍等。根据may I speak to Mary可知此处是打电话。英语中在打电话时，用This is......speaking.表示我是......。故排除AB两项。用Who is that?表示你是谁，故排除C项。故选D。
