Определите время:Past Simple Passive, Past Progressive Passive or Past Perfect Passive.
1.Last year China was predicted to become the world's biggest freenhouse gas polluter.
2.During the heat wave in 1995 Chicago's vulnerable populations, such as the elderly and low-income people,were hit especially hard.
3.It was mentioned at the conference that the Kyoto Protocol had not been ratified by Australia and the USA.
4.He was not sure what problems were being discussed at the moment.
5.The summer of 2003 was considered by many ecologists the hottest European summer in five centuries.
6.20,000 protesters were reported to have marched in London in the biggest demonstration on climate change.
7.The reporters stressed that the conference on global warming which was being held in the UK could lead to signing very important agreements.
8.All the documents it was revealed by Christopher Monckton in 2006 that in the Bronze Age and in Roman times in some places it had been warmer than at the beginning of the thrid millennium.The scientist pointed out that those temperatures had been caused by the sun, not by carbon dioxide.