When animals make a sound, such ________ a bark or a call, it is a reaction.

Visiting a sweets factory is exactly ______ children dream of.

Ailsa´s grandfather told her, "You may work here some day. "And indeed, she has, continuously, _______ 1999.

I am staring at huge vats of sticky liquid ________ eventually ends up as mouth-watering sweets.

Through several famous experiments,chimpanzees have ________ taught to use their hands to give information on a range of things.

Zoologists have had some success in teaching human language to animals. Chimpanzees were used ______ some of these experiments.

It _______ sometimes said that animals use language.

Animal sounds are in reaction to ________ is happening around them. An alarm call means they are frightened.

Being in a factory _________ this one is very exciting.

Every now _______ then I see a factory worker in a white coat put a sweet into her mouth.

Animals, though, cannot make a call meaning ‘I was scared yesterday’ or I’ll be hungry tomorrow.´ Only human beings are capable ______ doing this.

Today I am visiting a sweets factory, a building squeezed ________ a railway line and a canal.

______ I watch, trucks filled with sugar arrive at the factory where this family-owned company has been making sweets for some 80 years.