Is 께서 the honourific way of 이 or 가?
Shouldn't 에게 be replaced with 께, as per lesson notes?
께 is a formal version of 에게 and since it's just a student, it doesn't require formality
Why 말씀하십니다 and can it be 말하십니다?
@UAX - 말씀 is the honorific that must be used when talking about / to people deserving respect. It cannot be 말.