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A. What's that? B. It's a door. C. It's a yellow ball. D. What's this?
—
—It's a panda.
—What's that?
—It's a bird.
—What's this?
A. Thank you.
B. What's this?
C. How are you?
D. Good morning,
E. It's a chair.
A：Good morning, Lingling.
B： Ms. Smart.
A：
B：I'm fine, thank you.
B：It's a desk.
A：What's that?
B：
A：Sit down, please, Lingling.
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