—What are you doing outside the class? Didn’t you hear the clock ______? —Sorry, sir. I ______.
The British government often says that providing children with ______ to the information superhighway is of great importance.
The young man, ______ several attempts to beat the world record in high jumping, decided to have another try.
During the reconstruction of the city, many modern tall buildings went up ______ old shabby houses were torn down.
Not until he called the secretary three times ______ that the manager went to an important meeting.
Duncan, ______ NBA star, is one of _______ few basketball players who are very popular to many of his Chinese fans.