4. Fill in the sentence with the suitable form of the word in capitals. 1. RECYCLE
After "the clear up day" in the park the students took the rubbish to the local centre.
2. POLLUTE
is one of the most serious and crucial world's problems of our day.
3. ENVIRONMENT
Some of the first organizations in the world started in Britain.
4. DANGER
It was a very journey.
recycling
pollution
environmental
dangerous