- Inrecentyears,moreandmoremigrantworkershavemovedintobigcitiesandtheyhavebeenmakinggreatcontributionstothedevelopmentofcities.Newbuildingsneedthem,roadscan'tberepairedwithoutthem,andtheplantingandprotectingoftreesandflowersdependonthem.Indeed,theypla...
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