Originally sighted and wise people thought aboutconservation of natural resources, concerned about the purity of rivers and lakes, the density offorests and soil fertility. However, modern man is increasingly forgets to whom he owes his existence: more and more nature to retreat to thetechnical progress and the human thirst for profit. Enough of natural resources for our children and grandchildren? The answer to this question can only give ourselves every day,making every effort to preserve the purity of the world around us.
2. Last night we watched a football match on TV.
3. We saw this film a week ago.
4. The students went to Kyiv last week.
5. He made three mistakes in his last dictation.
6. It rained hard yesterday.