803. REVIEW 02

If you stay ....................... , you do not go to a place or an event.

We're aware ................... the problems that this damage will cause in the future.

If you're serious ...................... helping to save the world, we must take action now.

If you're enthusiastic .................. fighting for the only planet we've got, then we want to hear from you.

If you ...................... on an illness, you infect someone else with it.

Are you worried .................... our planet?

You can't escape ......................... the fact that we are damaging the environment.

There's been an increase ................... all kinds of pollution in the past hundred years.

It's not going to be easy to save the Earth ............... destruction, but we have to try.

We've got to prevent people ........................ polluting the planet further.