—Hello may I speak to John please?—.A. Who are you?B. Whats the matter?C. This is John

问题补充：

—Hello, may I speak to John, please?

—.

A. Who are you?

B. Whats the matter?

C. This is John speaking.

D. He is John.

答案：

A. Who are you?

B. Whats the matter?

(答案→)C. This is John speaking.

D. He is John.

解析：考查交际用语的用法。电话用语习惯使用“this is…”“who is that?”等等。