Prince Charles visiting Maritime Academy

The transcript involves a brief exchange where one person asks if a task has been completed, and the other confirms it has been mentioned before.

What do you think about the statement 'Have you done this?'

How would you respond to someone asking if you have completed a task?

In what situations might you use a similar conversational exchange?

What does the response 'Yeah, you mentioned it.' imply?

Can you explain the significance of acknowledging someone's previous mention?