Complete the sentences with the words in 1. (Remember to give the correct form of the verb). Life expectancy in Europe has............ greatly in the 20th century.

Which syllable usually has stress mark in these words? Do you realize the stress rule of the words with more than three syllable?

Rewrite these sentences and put them in reported speech. They added: "The radiation contaminated air, water, soil and all living beings." They added......................

Find and correct the mistake in each of the following sentences. The teacher us told that we must concentrate more.

Rewrite these sentences and put them in reported speech. He also asked him: "What should we do to clean up the oceans?" He also asked him......................

Rewrite these sentences and put them in reported speech. She said: "We can do simple things to save the planet, like saving energy and reducing waste." She said.....................................