문제 내용: 어법상 옳은 것은?
선택지 1: Jessica is a much careless person who makes little effort to improve her knowledge.
선택지 2: But he will come or not is not certain.
선택지 3: The police demanded that she not leave the country for the time being.
선택지 4: The more a hotel is expensiver, the better its service is.