Help please!O The following sentences all require passives. Complete them with perfect or simple tenses (present or past). 1 More pandas ... (raise) in zoos these days than are born the animals' natural habitat in China. 2 The idea of animal conservation ... (ignore) for most of the 19th century. 3 Most species of whales... (protect) for some years now an international agreement. 4 Even after thousands of years of hunting up to the 19th century, the buffalo... (not wiped out). 5 During the 1990s, the mountain gorillas of Rwanda ... (affect) very severely by that country's terrible civil war.​