A) find in the texts the words which have the similar meanings as the following words: to dirty, different, to destroy, to throw, waste, to run, disease, to reduce, complex, to manufacture, at once, quantity, constantly. b) find in the texts the words which have the opposite meanings to the following words: to clean, the same, to restore, unnatural, the least, death, to increase, ugly, simple, small, little, to begin, visible, national. c) read, translate the sentences, change the words in italics into the words with similar and opposite meanings. 1. as a rule, they pollute the surroundings. 2. they are constantly reducing the pollution. 3. this is a very complex problem. 4. they have various problems. 5. they are destroying the surroundings.
b) 3
c) 1