补全对话。 A: Do you know we have a new teacher and two new students this term? B: Really? What does the new teacher look l ? A: He is an old man. He 2 no hair. B: Is he bald? A: Yes. And he 3 glasses. B: 4 he have a mustache? A: No, he _   5 a beard. He is not good looking, But he is very kind. B: What 6 your new classmates? What 7 they __ 8 like'? A: They are twins. They look the 9 .They 10 of  medium height. They're not heavy _  11 thin, They _  12 curly hair. B: What's the 13 14 their hair ? A: Well, they 15 blonde hair. They are good-looking