As with holding sand in the hand, the fastest way to lose love is to hold it too ______, and the best way to keep it is to give it wings.
Word has come ____ some excellent students will go on a study trip to Chicago next month.
____ computers are of great benefit to the development of science and technology.
____ puzzled the mother most was ____the son would never agree with her.
— ____ in this street? — I think Mr. Black is the richest man.
I haven’t found my watch yet; in fact, I’m not sure ____ I could have done with it.