_____ the lack of workforce in many industries, workers are now commanding higher salaries than they used to be.
—I think your brother is managing your parents’ shop the wrong way. —I agree. I regret _______it myself!
Upon ______the classroom, I started thinking about my mother.
Although it had been________ struggle for him to finish______ experiment, he enjoyed the result with________ satisfaction.
The map is one of the best tools a man has ________ he goes to a new place.
It is reported that the local police ________ the case of two missing children, but no much progress has been made up to now.