用所给词的适当形式填空
【小题1】Dick decided to lose __________（weigh）by eating less and doing more exercise.
【小题2】Jackson has difficulty in __________（solve）the problem in such a short time.
【小题3】China is a lot __________（crowded）than Canada.
【小题4】__________（teach）children is one way to help __________（save）pandas.
【小题5】Wild animals which are now in danger need our __________（protect）.
【小题6】I think one of the __________（easy）ways to make you strong is to exercise more.
【小题7】Thomas Alva Edison is one of the greatest __________（invent）in the world.
【小题8】Tu Youyou is one of the Nobel Prize __________（win）in 2015. We’re proud of her.