While the musicians practiced, he would sit and _________ with his eyes closed. (A) hear *(B) listen (C) watched (D) singing hear 와 listen의 차이?? He wanted to buy a ticket, but there were _________ left. (A) no *(B) none (C) not more (D) sold out 왜 답이 none 이에요?? The teacher's attitude makes her _________ with students. (A) liked *(B) popular (C) accepted (D) favorites 답이 왜 popular 이에요?? The photographer was unable to meet ___________ he had made to his clients. (A) pictures (B) customers *(C) commitments (D) appointments C와 D 모두 약속이라는 의미 아닌가요?? 차이가 있나요??