The 30th celebration of
earth day in the United States
The years have passed since the first earth
Day, in 1970
9( present
perfect,) when millions of people joined in one of the
largest demonstrations of public opinion in the history of our country.- past indefinite That day, 20 million Americans participated in
rallies, demonstrations to show their support for the protection of our health
and our environment.-past indefinite This earth Day we celebrate the cleanest
environment in a generation.- Present indefiniteBut our job is not done. Present indefinite passive We still face environmental and public health
challenges. Present indefinite One of our biggest
challenges is climate change. Present tense of to beGlobal warming is real
today. -present tense of to be More than 2,000 of the world’s experts on the
global environment have told us that the effects of climate change can be
predicted. -present perfect Last December the President announced new
standards. Past indefinite And for the first time, those standards
address not only the vehicles that people drive, but the fuels they use. Present indefinite Working together, we created common sense
standards that protect the public health. Past
indefenite There are also other sources of harmful
pollution. . Present tense of to be Over the next decade
alone, because of the investment made in the Energy Star Programme,(past indefinite) Americans will save
more that 24 billion dollars and help reduce millions of tons of harmful
pollutants. Future indefinite active And the best things about
it – we’re not just saving money;present
continuous we’re reducing pollution, protecting the
environment. Present continuous Such ecological problems
will not be solved by government. .
Future indefinite passiveThey will not be solved by
business. . Future indefinite passiveThey will be solved by us. Future indefinite passive