题目内容
B Listen and number (听录音，给图片标序号）
B a 3 b 2 c 1 d 4
B Listen and number
1 W: Is that your crayon?
B: No, it isn’t.
2 G: This isn’t my pencil case.
3 G: Is this your pencil?
B: No, it isn’t.
4 B: Is this your ruler, Su Hai?
G: Yes, it is.
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