Change the passive sentences to active and the active sentences to passive 1.Homeless people seeking a place to stay has occupied the building 2.Disused housing is being bought by government agencies 3.Anti-homelessness campaigners handed the Prime Minister a petition 4.Electricity costs can be reduced by the installation of solar panels 5.Greedy landlords were causing a sharp increase in homelessness 6.Construction companies are being given tax refunds by the government 7.The extra traffic hasn't created new problems in the high street 8.Flooding is more likely when houses are built near rivers by construction companies