ПОМОГИТЕ!!!! ОБЪЯСНИТЕ постановку


ПОМОГИТЕ!!!! ОБЪЯСНИТЕ постановку пропущенных слов!
The ‘Lost City of Atlantis’ was first described (1) _by_Plato, the famous Greek philosopher, over 2,000 years ago. His story paints a picture of an ancient civilisation whose hunger for power over others led to (2) _its_ final downfall. According to Plato, after a failed attempt to invade Athens, ‘the island of Atlantis was swallowed up by the sea and vanished’ in only one day.

Ever (3) _since_ this legendary account was given, philosophers and scientists have taken (4) __part__ in many debates and discussions about (5) __whether__ the city was real or not. Some say that Plato was merely trying to warn people about the dangers of political greed, (6) __while__ others believe the island really existed.

One American classical scholar, Daniel Dombrowsi, claims that Plato wanted to show (7) __what__ happened when man attempted to create an ‘ideal state’. However, some people have (8) __put___ forward the idea that Atlantis could (9) _have_ been one of the islands we know today as Crete, Santorini, Malta (10) __or__ Cyprus. And in their book ‘When The Sky Fell’, Rand and Rose Flem-Ath suggest that the lost nation could still exist today under the thick snow of Antarctica. Could a once sundrenched paradise now (11) _be_ a frozen tomb?

(12) _whichever_ theory we choose to believe, the myth of Atlantis seems set to remain a subject of debate for quite (13) _some____ time to come!

1 by- описана кем2 its-её,т.е цивилизации3 ever since-устойчивое выражение4 to take part in-принимать участие ,устойчивое выражение5 whether- союз,вводит косвенный вопрос6 while -в то время как другие ...7 what- что произошло8 put forward - фразовый глагол9 (could) have been-(modal) Present Perfect Passive10 or -альтернативные страны11 could...be-past Simple Active 12 whichever- какую бы из13 some time-некоторое время