Had I known about this computer program, a huge amount of time and energy ________. [ ]

It is illegal for a public official to askpeople for money ____ favors to them

23．— What’s that terrible noise．David? — Oh，I forgot to tell you．The new machines in the nearby plant _______

It’s a wise _______ to wear a white tie. It matches your new suit well.—-Thank you very much.

Why didn’t you get your hair ?