Which of the following we can't use when we make a telephone call?
#21376
A
Who's that?
B
Who's calling'?
C
Who's speaking?
D
Who are you?
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— Do you have the time?  — Sorry, I have no watch.   — ____ 
#4285
A
What a shame!
B
Thanks anyway.
C
It doesn't matter.
D
Why not buy one?
---Have you got an e-mail from Millie?  ---________. But no news is good news.
#24334
A
Yes, I have
B
Never mind
C
No problem
D
Not yet
–Excuse me , Sir . Smoking is not allowed here .–Oh, sorry. I __________.
#4330
A
haven’t know
B
don’t know
C
hadn’t know
D
didn’t know