Прочитайте текст пропусками, обозначенными номерами 30-36. Эти номера соответствуют заданиям 30-36, в которых представлены возможные варианты ответов. Запишите в поле ответа цифру 1, 2, 3 или 4, соответствующую выбранному Вами варианту ответа. Tower Ravens The ravens are the unique guardians of the Tower of London. They have patrolled the Tower 30 _____________ over 900 years. A well-known legend 31 ___________ that should the ravens ever leave, the White Tower would collapse and a great disaster would happen to England. Fortunately, these respected residents have been protected by a royal decree. They are kept at the Tower at the 32 ______________ of the British government. Ravens live up to an average of 25 years, but have been known to live up to the age of 45, These magnificent birds respond only to the Ravenmaster, a yeoman warder who 33 _____________ care of their feeding and well-being. During World War II, the number of the Tower ravens decreased dramatically, it 34 ____________ its lowest point soon after the war finished. With the disturbances of the bombing only one raven was left to patrol the Tower. New birds were soon on their way, some were drawn from the wild, some from animal shelters. Finally, the Tower had its full complement of birds. Thanks to the generosity of visitors the Tower has 35 _____________ money to start its own breeding programme. Now there is a complement of six birds plus reserves. They control four different territories within the Tower. In recent years, the Tower has proudly witnessed the birth of a new generation of ravens. The ravens are now a national icon for the British and 36 _____________ many tourists make a special effort to see them. 1) since 2) for 3) in 4) until