That hero who died in the war was so brave that he never ____ ____ to the enemies until death.

Miss Green often said “God helps those who help themselves”, intending to _______ on us the significance of being independent.

 I threatened to report the taxi driver for illegally ______ a passenger, but he pointed at his “Not for Hire” sign and drove away.   

(2013·昆明一模)The landlord wants to ________  the rent by $ 30 a month,    which I think is unacceptable.

--- Ouch! You stepped on my toe!--- I’m sorry, I didn’t __________.