1. Is the boy flying the kite? (✓) 2. Are there any potatoes in the box? (X) No, there ain't

Answers:

1. Yes, he is. (The boy is flying the kite.)
2. No, there aren't. (There are no potatoes in the box.)

Explanation for question 2: The question uses 'Are there' which implies a plural subject. The answer should therefore use 'aren't' if the answer is negative. The handwritten answer 'No, there ain't' is grammatically incorrect. 'Ain't' is a non-standard contraction and should be avoided in formal English. The correct negative response uses 'aren't'.