By all _____, you must try every _____ to help him.
It has been announced that candidates _______ remain in their seats until all the papers have been collected.
_______in the ocean, it becomes powerless once it is on the beach.
There is a 20-minute parking ________here, so we must get back to the car very quickly.
But for the help of my English teacher, I _______ the first prize in the English Writing Competition.
This monument was built ______ the little hero.