29

What living beings are the most important on the Earth? You may say “people”, but my grandfather, who is a ………………… , knows better.

FARM

30

He is sure that there are no more ………………… creatures than bees.

USE

31

He, ………………… , says that they are essential for life on the planet.

ACTUAL

32

Bees take pollen from one flower to another — without them growing most plants is ………………… .

POSSIBLE

33

The hardworking insects are ………………… in many ways. Their communication, for instance, is very complicated.

AMAZE

34

They use movements to exchange ………………… .

INFORM