Problem: Given the question: Read the below conversation. W: What an accident! If you've been careful, things would not be as they are. What would the listener say?
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The answer is:
M: What do you mean? It was my fault? If it were, surely I'll take all responsibility for it.

Problem: Given the question: Read the below conversation. W: We can all go swimming in the river after the basketball match. What would the listener say?
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The answer is:
M: If it's a nice day of course.

Problem: Given the question: Read the below conversation. M: Would you mind turning down the TV a bit? I'm answering the phone. What would the listener say?
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The answer is:
W: Not at all.