-- Hello! Is that Mr Wang speaking? --Yes ?A. who' s thatB. who are youC. I' m speakingD.

问题补充：

-- Hello! Is that Mr Wang speaking? --Yes,?

A. who s that

B. who are you

C. I m speaking

D. I m Mr Wang

答案：

(答案→)A. who s that

B. who are you

C. I m speaking

D. I m Mr Wang

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