1 They were shown (show) on TV that after the hurricane New Orleans'

sports arena (became) shelter for 20,000 people.

2 Soon it (became) clear that the federal government's response (had been) too slow.

3 Last year China (was predicted) to become the World's biggest greenhouse gas polluter.

4 It (was mentioned) at the conference that the Kyoto Protocol (had not been ratified) by Australia and the USA.

5 Do you (have) separate rubbish bins for paper, glass andaluminium in your area?

6 This year nearly a quarter of all cars that (have been sold) in the USA are big cars suitable for off-road action.

7 They (will have completed) the new recycling factory by the end of the year.

8 Protecting the environment is not an easy problem to solve, but I'm sure it

(will be solved) one day.