At the __________ of the gun,the runners dashed from their starting points.

 Arriving home，the boy told his parents about all the________which occurred in his dormitory.

Unless you change your ________ towards your studies, you won’t make any progress, I believe. 

There’s no ________ from my bedroom window except for some factory chinmneys. 

This extra effort makes a lasting _________, the kind that often results in some fortune with extra business.