13. Please tell me what the problem is?
14. Do you know how long it takes to get there?
15. I wonder whether Annie knows about computers?
16. Could you tell us how to get to the post office from here?
17. Would you mind telling me if I need a reservation?
18. I wonder whether this is the only newspaper here?
19. Can you tell me when the next train leaves the station?
20. Can you let me know if they come early every day?
