Choose the correct form of the 3rd Conditional: 1.If the Titanic (didn't hit / hadn't hit) an iceberg, it (wouldn't have sunk / doesn't sink).

Доброго времени суток! 1) If the Titanic hand't hit an iceberg, it wouldn't have sunk 2) If the Aztecs had defeated Cortes soldiers, the Spanish mightn't have conquered Mexico3) What would have happened if Columbs had thought the world was flat? 4) If the Tsar's soldiers han't shot demonstracting workers in 1905, there mightn't have been a revolution in Russia5) John Kennedy mightn't have been assassinated in 1963 if he hadn't travelling in an open-top car. На заметку: Форма образования 3 — типа условного предложения: If затем в Past Perfect (had / had not) … Would have+v3 (глагол в 3 форме). А так же, вместо Would часто употребляются и Might, Should, Could. Удачи=)