The thieves ran away as fast as possible at the ___ of the policemen.

The officials have expressed ________ over the safety of the mine workers trapped in the mine．

The workmen made so much _____ that Mrs. Walker had to spend three days cleaning up afterwards.

 —What do you think will be the future of your new invention?—I’m sure it will have many different _________ in the industry. 

There are ten＿＿＿teachers and two hundred＿＿＿students in the school．