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A: Hi, Darning.
B: Hi, Sam.
A: Can I ask you some questions?
B:
A: When is the Tree Planting Day?
A:
B: We plant trees.
B: Because trees can make the air clean.
B: OK! See you tomorrow.
A. It's in March.
B. OK.
C. Let's plant trees tomorrow.
D. Why do people plant trees?
E. What do you do on Tree Planting Day?
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