B4

Books tell stories, films tell stories and we tell one another stories. Telling stories has been important since people first sat around a camp fire.

(present perfect, т.к. это важно и до настоящего времени)

BE

B5 

Back then, hundreds of thousands of years ago, people told stories about things they had done earlier that day while hunting.

(past simple, т.к. уточнено время в прошлом)

TELL

B6

A hunter could make himself sound very brave in his own story.

(себя самого)

HE

B7

They also made up mythical stories, explaining the world around them and where they came from.

(Participle I, “объясняя”, подходит по смысловому контексту)

EXPLAIN

B8

Many of those/these stories became part of their culture because they were told many times.

(тех, этих)

THAT

B9

Long before writing appeared, people learnt stories from their parents and passed them on to their own children.

(past simple, т.к. определённое событие в прошлом)

APPEAR

B10

Stories were sung to babies by their mothers.

(past simple, т.к. это все происходило тогда и это не связанно с настоящим)                                      

SING

B11

This continues to be an important form of education in many parts of the world, even today.

(present simple, т.к. это общее утверждение)

CONTINUE