In the early days of the American West，life was difficult．People lived on farms away from other families．（71） Then they saw their friends and neighbors there．On their farms everyone had lots of work to do．There were some big jobs，and one of them was to build a house．
What did families do to build houses？They asked for help．（72） Women cooked together when men worked on the building．For children，it was like a holiday．There were many children whom they could play with．They enjoyed this form very much．Together these people built a house．At some other time the family with the new house would help their neighbors，too．They helped each other for the good of everyone．
A work group is really cooperative．To cooperate means"to work together"．A big job can be easy because of cooperation．Many people can work together．（73） It will become a small job for many workers．
Today，there isn't much cooperation．People don't work together very often．（74） How can they ask them for help？
Now，we help others only when they have emergencies（紧急情况）or accidents．We call the police for help，we talk to our neighbors，and then we become true neighbors and friends．
Why not always cooperate？Why not work with other people？You'd better not wait for emergencies or accidents．（75）
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A．So some people don't know their neighbors．
B．They went into town once a week or once a month．
C．If you always work with others，it can be fun，and life can become easier，too．
D．They asked their friends and neighbors，and invited them to a work group for a few days．
E．Then the job will not be difficult．
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