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．
I （not finish） my homework yet． I am afraid I can't go to the park with you．
Can I help you， sir？
A box of （tomato）， please．