This was a really difficult question,but a little boy ________a good answer.
They lived a hard life and were often made _______ for over ten hours a day.
_____ of the students who took part in the military training is 450.
The sales _____ steadily, the factory needs an increasing supply of raw material.
We prefer to measure our football team’s success _____ the number of fans attending rather than the number of games won.
_____ in the regulations that you should not tell other people the password.