Knowing how long the test would last, the students who finished ____ back and waited until the end of the exam.
For some students, the computer serves only _____ a tool that is used to play games.
The parents are _____ their son who has been away from home for days.
—What do you think of the new movie directed by Jackie Chan? —Well, most people think it is wonderful. But _____, it is just a new one, nothing special.
Persons under 18 _____ not be employed in night work in the US.
Suddenly, the lightning flashed through the clouds, nearly ____ Paul.