Shortly after publication, the book became ____ because of the writer’s repeated use of the negative word "nigger" to refer to the black Americans. 

This washing machine is environmentally friendly because it uses _____water and electricity than _ ___models. 

Attention, please, everybody! Please stay_____ while I take a photograph of you.                          

(2013·浙江，2)Mary worked here as a ________ secretary and ended up getting a full－time job with the company.

Peter and Bob both did well, but Peter is ________________of the two.