Do not let any failures discourage you, for you can never tell ________ close you may be to victory.

____, I got better and returned to work.

In the bubble years, lending standards slipped ______,allowing   many people to put far too much of their income into paying for their housing.

Recent studies have discovered that fathers uniquely contribute to the development of their children, _____in low income families.

He left in such a hurry that I _____ had time to thank him.