Usually,I use these questions when I go to English Camp.
However , I have never use "Could I/you possibly…?
• I’d be very grateful if you could…
• … if it’s not too much trouble.Would it be possible for me/you to…?
• I was hoping you could… (for me)
• I could do with some help with…" before.
Thus,Thank you for sharing,Jib. I will bring your technique to use in class and English Camp.
Pornrawin048 3EN