日本語をクリックすると英文が表示されます。まずは自分で英語にしてから答え合わせを。
I'm sorry to put you to the trouble.
Just do what you can, that's fine.
I won't insist, of course.
There's no rush on your reply, take your time.
If you don't mind, could you tell me why?
Forgive me for asking, but...
I apologize if I've offended you.
If it's alright, could I have a moment later?
I'm sorry to bother you when you're busy.
If I may be so bold, let me make a suggestion.
Only if it's possible; no pressure.
Just to add, for the record...