Each year __________ fishes are killed by the polluted water and many people are made sick by thepolluted air .—-So we should do something to stop it .

The population of China is larger than ______ of any other country in the world.

“ Neal, listen,” she said, looking straight at him．”I ask you not to get ____in this kind of matter．—It’s none of your business”．

His idea is ______ you’d better ____a jar of jam at home.

Alex Honnold is planning to climb the mountain， without even using a rope.–What I’ve never heard of ______ idea before.