根据句意，同所给词的适当形式填空。（每题1分，共5分）Eric is the __________ (win) of the singing competition.
Tom always works hard. He listens to the teachers _________ (careful) than others.
Wuhan is __________ (hot) city of the three.
My parents enjoy __________ (live) in the countryside.
My mother expects me ___________ (be) a reporter.
They expected that they could solve the problem by________（they）．
________（polite），he drove the old man out of the room and shouted at him angrily．
Be careful to cross the street when we meet heavy________（traffic）．
My mother can’t sleep well，and sometimes she even stays________（wake）the whole night．
Is it possible for us human beings to leave all the animals in the________ ________（自然环境）？