When asked to explain _____ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.

The boy wanted to play football in thestreet, but his parents told him ______.

all, reputation is a treasure ________ once lost, can never be won back.

Bob and David are friends. __________ of them work in the art club as volunteers.

are fewer teaching positions left in big cities,______ at the same time there are shortages of teachers in small towns