"Can I get some sugar?"
Please Duo can you change your standard translations of "Can I get . . . " to "May I have . . . . please?" as this would cover for both american an british english. "Can I get . . . .?" in British english would often be regarded as rude as it implies the interlocutor should hurry up or it will be seen a request for permission get the item themselves. So it doesn't reflect the true meaning or politeness of the japanese.