Open the brackets using the right form of the verb.

How long has man been on earth? Let us travel 5,000 years into the past. We ar ein the days of before man 1(learn) _______ to write. Recorded history 2(not begin) _______ yet. Let us go further into the past to 8,000 years ago. We are in a world without cities or towns, houses or roads. Yet there are people, about five million of them, 3(live)________ on all five continents. The have cows and horses and they 4(farm)_____ the land. To find the first man we must 5(go)_____
 many hundreds of thousands of years info the past. The earliest true human being/ Homo sapiens, appeared in Europe more than 50,000 years ago.