dialogue: M: Anna just emailed to say that the managers' meeting is put off till next Monday. Will you have everything ready by then, Sabrina? Hey, Sabrina, what's wrong? W: I'm so worried. I haven't heard from my sister for two weeks. M: How often do you call each other? W: Normally at least once a week, but she's now a volunteer teacher at a mountain village in Africa. I can only write her. M: The mail can be really slow sometimes. I'm sure you'll hear from her soon. W: I hope so. M: You know the saying, "no news is good news." If something were wrong someone would have called you. W: Maybe you're right. Thanks, Jason.
question: What is the probable relationship between the speakers?
choice: Colleagues. Relatives. Classmates.
answer: Colleagues.