— Why does he never pick up the waste paper on the ground?— Maybe because he thinks it’s beneath his         to do so．

A sharp _________in production wouldn’t have been seen but for the advanced techniques.

 — The government plans to build a new hospital near the road.— So the neighboring villages will get great ______ from that.

The island where these rare birdsnest has been declared a _____.

Many young people leave their hometown to seek their _______ in big cities.