Which of the following can’t we use when we make a telephone call?
#23273
A
Who’s that?
B
Who’s calling?
C
Who’s speaking?
D
Who are you?
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—Hi, is Mary there, please?—             .
#3121
A
Hold on, I will get her.
B
Don’t mention her, please.
C
Yes, she lives here.
D
Yes, what do you want?