Look ！A boy on the playground.

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

To make China _________ the USA in science and technology, we need more talents.

The boy felt so blue yesterday, because he didn’t pass the exam.

What do you think of the movie “Lost In Thailand”? —It’s ________. It makes everyone happy.