Past simple or past continuous help me

broke/ was playing

was driving / stopped

was snowing/ left

didn't see / was working

called/ was talking

Объяснение:

because F

although D

but G

because B

because A

because C

At the present time the significant changes have been occuring and they are not always positive. Ozone layer protects the earth’s surface from the sun's ultraviolet rays, debilitating the organism's ability to withstand the diseases. It is broken by chlorofluorocarbon, utilizing in aerosol production, in the manufacture of materials for the sterilization of medical equipment and etc. The greenhouse effect and acid rains are the result of burning  of the fossil fuels, disposable by different sources. Mass cutting down  of forests leads to disruption of the process of rotation the oxygen and carbon in the biosphere. Ecological balance is disrupted also by plenty of disposable garbage and water pollution by harmful substances. 

Every year a lot of species of plants and animals have been destroying , forest cover has been exterminating, mineral reserves have been decreasing, the world ocean has been becoming depleted. These losses are incommensurable. 

The global environmental crisis may turn into a catastrophe for the planet in the future. If mankind doesn’t change the way of consumption the natural resources, there will begin famine, deficit of clean water and outburst natural disasters. The environmental crisis is overcame by means of ecological education of all stratum of the society, creation of effective nature conservation legislation, implementation the good scientific and technical solutions, applying the conservation ecology.

The child sat on a rock and looked at the river. She sat (1) perfectly still, looking at the family of ducks circling around on the surface of the dark water. Her eyes were large (2) greyish in colour and solemn. It was a (3) wonderful day in August. The sky was a (4) beautiful blue arc and (5) untouched by clouds, the (6) golden sun - a perfect sphere , and on this (7) colourful summer's aftermoon nothing stirred. The only sounds were the faint (8) buzzing of a bee flying above the roses. The child remained fascinated by the wildlife on the river, and so intent was she in her (9) concentration that she hardly moved. Isn't it an ideal picture of one's happy (10) childhood.