12. There are (二十)students in the classroom.
B.补全对话(6)
A: Good morning, boys and girls.
B: Good morning , (1)
A: Sit down , please.
B: (2) (3)

A: (4) (5) are you, Millie
B: I’m thirteen.
A: It’s very cold (冷的) today ,please (6) the door.
B: OK.
C.英汉互译(10)