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A: I’m calling about a problem with my apartment.
B: Tell me what the problem is.
A: There must be a leaking pipe in my ceiling.
B: Are you sure?
A: There is water leaking from my ceiling.
B: Is the water flooding your apartment?
A: It’s not flooding, but my carpet is beginning to smell.
B: Has it been leaking long?
A: I believe it began leaking today.
B: Someone will be right up to fix it.
A: I’d appreciate that.
B: Let me also apologize about the problem.
n. 天花板，上限
