---May I speak to Mr. Brown?. I’ll go and get him.A. SpeakingB. Wrong numberC. Hold on

问题补充：

---May I speak to Mr. Brown?

--- . I’ll go and get him.

A. Speaking

B. Wrong number

C. Hold on, please

D. Just a little

答案：

A. Speaking

B. Wrong number

(答案→)C. Hold on, please

D. Just a little

解析：Speaking我就是，请讲；Wrong number您打错了；Hold on, please请稍等；Just a little只要一点点，不过如此。根据上文，可以找布朗先生接电话吗？——请稍等，我去叫他。结合语境可知选C。