—Where does your sister work, Jack? —She works in a ___________. 

The drilling in Antarctica dragged on slowly because of lack of money, equipment breakdowns, environmental ______ and severe cold.

Football is a ________ of a sharp mind and hard training rather than just talking.

----How do you like our city? ----It has changed beyond all _____ in the past 20 years, a completely new one in front of me.

Several leading _____ resigned from the party yesterday.