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 Apartheid 3 The Berlin Wall 4 The identity of Jack the Ripper 5 6 The atomic bombs 7 The Pyramids of Giza 8 Slavery should not have been allowed to exist in the United States should not have been dropped on Hiroshima and Nagasaki should not have been practiced in South Africa could have been a giant squid. might have been built by aliens The disappearance of Amelia Earhart may have been caused by engine failure. should not have been constructed during the Cold War might never have been discovered