Would you like some jam? - Yes, I would. (Yes, please.)
Would you like some jelly? - No, I wouldn't. (No, thank you)
Would you like some tomatoes? - No, I wouldn't. (No, thank you)
Would you like potatoes? - Yes, I would. (Yes, please.)
Would you like some jam? - Yes, I would. (Yes, please.)
Would you like some jelly? - No, I wouldn't. (No, thank you)
Would you like some tomatoes? - No, I wouldn't. (No, thank you)
Would you like potatoes? - Yes, I would. (Yes, please.)