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听下列短文，请补充完成。 Over the years, the way people do different jobs has changed. Cars, electricity, computers, and other types of 1 have changed the way work is done.

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Some 2 change.

We may no longer need people to do 3 jobs, and we may need people to do new jobs.

We like to talk on the phone. Long ago, telephone 4 used a switchboard to connectpeople making calls.

Today, computers 5 most telephone calls.