Is it okay if I call you?
Is it okay if I go home early?
Is it okay if I sit here?
Is it okay if I take a few pictures?
Is it okay if I use your computer?
Is it possible to change my flight reservation?
Is it possible to connect to the internet?
Is it possible to exchange this pair of shoes?
Is it possible to hire a guide?
Is it possible to order an extra shirt?
Is there a bus going downtown?
Is there a restaurant open at this time?
Is there a time difference?
Is there a way I can master English?
Is there an intermission?
Is there anyone who can drive you home?
Is there anyone who can drive?
Is there anyone who can help me?
Is there anyone who knows how to do this?
Is there anyone who speaks Korean?