Here are the completed sentences for the exercise:

**A:** Could you tell me the **way** to the computer room please?
**B:** Go **past** the art room and **turn right**.
**A:** Thanks a lot, Mr Long.

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**A:** Excuse me.
**B:** Yes?
**A:** **Could** you tell me the way to the **music room**, please?
**B:** Go **down** the corridor and **turn left**.
**A:** Thank you.
**B:** You're welcome.