______in a science competition, the three students were awarded scholarships totaling $ 21, 000.

There are three eggs _______ by the hen_______ under the tree.

 It’s harmful for the students to spend too much of their time ______ computer games.

Before traveling in space, you must know what it might feel like_____in an imaginary environment.  

Mr. Smart is believed to be a capable person, who is equal_____ charge of the company very well.