题目
means that there is a need for servicemen to keep it running properly. __5__People are earning higher wages and salaries.
第1题
services city people want, such like more police protection, more __2__hospitals, and more schools.
第2题
Changes in the way people live bring about changes in the jobs that they do. More and more people live in towns and cities instead on farms and in villages. Cities and states have to provide __1__services city people want
第3题
Machines have a certain novelty value, as toys for adults. It is certainly less __2__
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