The new bridge __________ by the famous architect is __________ now.
The players expected there ____ more free time before coming back to the country from abroad.
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.