Read the text and fill in the gaps with the right phrases.

Ecology of Man
It may sound funny to you, but man needs ... as much as animals do. ... — their homes, towns and cities — must be kept ecologically clean. In the places where people ... , eat bad food and breathe polluted air they ... and die early; their children are born weak. No medicines prescribed by the doctors can save them. This problem becomes more and more serious with every passing day. The modern way of life, when people do ... , use cars instead of walking, watch television for many hours and work on computers is turning them into ... .