Question

—Hello, may I speak to John, please?

—        .

1. A.
   Who are you?
2. B.
   What's the matter?
3. C.
   This is John speaking.
4. D.
   He is John.

Answer 1

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