【5】 (at the expressway tollgate) "It's expensive, is it a high-speed charge, is not it?"
It is a pattern that appeals to you in a roundabout way that you want to split the fee at a toll gate on a highway. By appealing that the burden of high-speed price is high, "It is expensive?" By appealing to girls, "If there is something you want to say, please say clearly!" There is a fear of being disliked. Perhaps it would be better for you to ask "Is it possible for a high-speed fee to split the bill?"
【6】 (When trying to get off the car without paying money) "Is not something forgotten? (You have not paid money?)"
For a girl who does not pay gasoline fee, high-speed fee, parking lot etc, it is a pattern to convey a message "Do not pay money? Since it is a sarcastic phrase and there is a possibility that girls are hated by it, if you want me to pay money, you'd better ask straight.