Intelligent house furnishings（智能家居） are （wide） used in people's homes now．
Deep in his heart， Nelson Mandela wanted to help the black people to live （free）．
Miss White often has us （tell） interesting stories in her English class．
根据句意用所给单词的适当形式填空．
Look! Your room is really （tidy）． You should learn to be organized．
Qian Xuesen （consider） as "Father of Missile（导弹）in China"．
Our earth is becoming more and more （pollute） because of the rapid increase in population．