Do you hear someone knocking at the door?

[touchstone]

--Do you hear someone knocking at the door? (Someone is knocking at the door, do you hear? )

--Yes, I did. I heard him knock three times.
[FONT=&#23435]（from a grammar book[FONT=&#23435]）[/FONT][/FONT]

I wonder if ‘Do’ in the first sentence should be replaced by ‘Can’.
Thanks.

 

[tedmc]

Yes, you can. But the reply would be "Yes, I can" to be consistent with the question.

 

[emsr2d2]

Also, the question "Do you hear ..." is rather unnatural. If the knocking has stopped, the question would be "Did you hear ..." which naturally leads to the response "Yes, I did". If the knocking is ongoing, "Can you hear ..." is the more natural question, with "Yes, I can" as the natural response.