The average ,... watches television for about 15 hours a week
Giải thích
Đáp án D
Spectator = a person who is watching an event, especially a sports event
Observer = a person who watches somebody/something
Audience = the group of people who have gathered to watch or listen to something (a play, concert, somebody speaking, etc.)
Viewer = a person watching television
Câu này dịch như sau: Lượng người xem tivi trung bình khoảng 15 giờ một tuần.