What's your email address? - Would you mind telling me ______?
what your email address is.
Has Lucy been to Mexico? - I'd like to know ______?
whether/if Lucy has been to Mexico.
Where is the train station? - Could you tell me ______?
where the train station is.
How should I fill this form? - Could I ask you ______?
how I should fill this form.
Have you called to the main office yet? - Can you tell me ____ ?
whether/if you have called to the main office yet.
Where did your colleague go on holiday this year? - May I ask ______?
where your colleague went on the holiday this year?
When will you pay to vendors? - Do you mind telling me ______?
when you will pay to vendors.
Are you coming to the party? - Could you let me know ______?
whether/if you are coming to the party.