The step you have taken is ________ much risk（冒险）.

-- I’d rather have some wine, if you don’t mind.--- ________. Don’t forget you will drive.

Helping others is a habit, ___ you can learn even at an early age.

Helen has been looking for a job over the whole year, feeling she can’t get _________ without work experience.

Of the equipment we have produced, this sells best, for it has the advantage over ________ of working efficiently.