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Prehistory
Tertiary sector
Primary sector
U. 5: Work. Economic sectors
Secondary sector
Palaeolithic period
Review U. 5 Matter and energy
Social Science U.5
Ancient history.
Day and night
The Contemporary Age
The nature trail
The Middle Ages and The Modern Age
Parts of a day
Time. review u.6
Revolution
Have-Has got
Unit 2. Let-s go shopping.
Wild animals