Pollution is a big problem in our cities.
People can recycle rubbish instead of throwing it away.
Littering is very dangerous for people, animals and birds.
Many species of animals are disappearing.
It is necessary to help wild animals.
Greenpeace is an organisation that fights to protect the environment.
Many people are concerned about the ecology today.
The seas and rivers are in danger.
People need wood and paper so they cut down forests.
Cars are the world’s biggest air polluters.
Tom has been reading for 2 hours, he has read 44 pages so far.
Rachel has been travelling for three months , she has visited six countries so far.
Patrick has won the national championship four times, he has been playing tennis since he was ten.
Lisa and Sue have made five films since they left college, they have been making films since they left college.
1 have you been playing 2 has broken 3 have you been working 4 have you ever worked 5 has she gone 6 haven’t been waiting 7 has stopped 8 have lost - have you seen 9 have been reading - haven’t finished 10 have read
pollution is a big problem in our cities
People can recycle rubbish instead of throwing it away.
littering is very dangerous for people, animals and birds.
Many species of animals are disappearing .
It is necessary to help wild animals.
Greenpeace is an organization that fights to protect the environment.
Many people are concerned about the ecology today.
The seas and rivers are in danger .
People need wood and paper so they cut down forests.
Cars are the world’s biggest air polluters
Объяснение: