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had been working; are still working had worked; were still working have been working; have worked have worked; are still working
had been working; are still working had worked; were still working have been working; have worked have worked; are still working
had been working; are still working had worked; were still working have been working; have worked have worked; are still working
workers often got iii because of the poor working conditions companies were free to put out any products they wanted to many people were killed by the dangerous products industries were not as careful in management as they are today
had been working; are still working had worked; were still working have worked; were still working have worked; are still working
had been working; are still working had worked; were still working have been working; have worked have worked; are still working
were working out worked out are working out have worked out
workers often got ill because of the poor working conditions companies were free to put out any products they wanted to many people were killed by the dangerous products industries were not as careful in management as they are today
had been working; are still working had worked; were still working have been working; have worked have worked; are still working
had been working; are still working had worked; were still working have worked; were still working have worked; are still working
had been working; are still working had worked; were still working have been working; have worked have worked; are still working
It had not been for Had it not been for Were it not for Has it not been for
It had not been for Had it not been for Were it not for Has it not been for
had been working; are still working had worked; were still working have been working; have worked have worked; are still working
had been working; are still working had worked; were still working have been working; have worked have worked; are still working
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