Perseverance is a kind of quality --- and that’s ________ it takes to do anything well.
Changing the design of a new product may ______ the risk of its production in the market.
Why don’t you ______ it to his attention that you are too busy to go on working?
No sooner ______ down on bed ______ the telephone rang.
He never thought that his success came ______ he least wanted it.
______ in the regulations is that you _____ other people the password of your e-mail account.