Please help to explain these questions. Q1. Why is this sentence "그녀가 언제 올 것을 몰라요" grammatically wrong, and how to correct it? Q2. Why is the usage of honourifics in this sentence "저는 저의 할아버지께 선물을 주셨어요" grammatically wrong, and how to correct it? Q3. 제가 매일 하___ 똑같은 일은 너무 지루해요 a) 던 b) 는 c) ㄴ (한) d) ㄹ (할) Why is the answer b) and why are the rest of the options wrong? Thank you!