Relacionar Columnas Modal verbs in the pastVersión en línea Connect these two columns and construct sentences in the passive voice using should and shouldn't to comment on historical mistakes made by mankind. por Segni 1 The cause of the Mary Celeste's mysterious desertion 2 Slavery 3 The Pyramids of Giza 4 The atomic bombs 5 6 The Berlin Wall 7 The identity of Jack the Ripper 8 Apartheid should not have been practiced in South Africa could have been a giant squid. should not have been allowed to exist in the United States should not have been constructed during the Cold War should not have been dropped on Hiroshima and Nagasaki might have been built by aliens might never have been discovered The disappearance of Amelia Earhart may have been caused by engine failure.