—Could I speak to Tom?— Speaking. ?A. Who is thisB. Who is that C. Who are youD. Who is T

问题补充：

—Could I speak to Tom?

— Speaking. ?

A. Who is this

B. Who is that

C. Who are you

D. Who is Tom

答案：

A. Who is this

(答案→)B. Who is that

C. Who are you

D. Who is Tom

解析：本题是打电话用语，问对方是谁可用who is that？故本题选B。