He was admitted to our school two years ago, a top school in our hometown, _____ he has been crazy about reading electronic novels, killing time.
At the______ of the century, Shanghai is developing at a rapid speed.
—Excuse me, may I ask you some questions? ---Sorry, I’m too busy and haven’t even a minute to________.
The computer was one of the greatest______ in the 20th century.
He_____ some German while he was away on a business trip in Berlin.
The finance minister has not been so _____ since he raised taxes to such a high level.