Peter: Mum, I' m so proud that you are a 1 . How many students are there in your class?
Mum: Forty-five.
Peter: Then it' s hard to have many one-to-one talks with each person. How do you know what' s going on in their minds in class?
Mum: My 2 ? I look at their body language.
Peter: Their body language? But 3 ?
Mum: It' s easy to see when students show interest in a lesson. Most 4 and make eye contact. They lean forward and look at me. People like to lean towards whatever they are interested in. When I tell a joke, they 5 . When I talk about something 6 , they are at a loss. If a student keeps looking at his watch, it shows he is 7 and just counting the minutes for the class to end. 8 two friends lean their heads together, they are probably writing notes to each other. Of course, not everyone who looks up is 9 in class. Some students look up but there is no eye contact. Their eyes seldom move, and they 10 wear the same expression. It seems that they are asleep with their eyes open!
Peter: From time to time I daydream in class. 11 you teachers see it?
Mum: Sure! With their chins（下巴）on their hands, daydreamers look out of the window or up at the ceiling. They are certainly interested in something, 12 who knows what? When they are attracted by other things, they spend all their time looking anywhere but at me. Then I 13 them to pay attention in class. As a teacher, my 14 is helping every student to learn. Their 15 language helps me know when to adjust（调整）class activities, and when to talk to students separately, so they can all get the most out of school.
Peter: Mum, you are so great!
