Sure! Here is the text completed with the appropriate words:

Can you imagine a world where grass is a dirty brown colour, and tomatoes are black? This is the world that colour-blind people live in. They can see (1) **certain** colours by their (2) **brightness** well otherwise, and learn to understand some people are born with, so (3) **different**. Colour blindness is something more men suffer from than women, and they usually have difficulty in seeing the (4) **difference** between red and green, as well as occasionally confusing blue and yellow. Another extremely rare case is when there is total (5) **absence** of colour—when a person can only see in black and white, which can be present from birth or may be the result of brain damage in an accident. Colour-blind people can encounter (6) **difficulties** in everyday life, such as choosing clothes. Another problem is driving when traffic lights must be understood from their position, so most colour-blind people are (7) **advised** not to operate (8) **machines** to drive alone because coloured switches and buttons are often used. I must admit to feeling a certain (9) **curiosity** about what it must be like to see things in this way. For most of us, the (10) **presence** of colour in our everyday lives is something we take for granted, and we have no idea that there is another way of seeing the world.