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B1: Every year the world goes dark for one hour, the Earth Hour. The event is organised by the ___ World Wildlife Fund. (NATION)
B2: At tourist destinations, in offices and private homes, lights are switched off for one hour at ___ 8:00 pm. (EXACT)
B3: The idea is to show that our planet is in danger and it needs care and ____ (PROTECT)
B4: It\'s ___ to remain indifferent to changes in the climate which go on and on. (POSSIBLE)
B5: The Earth Hour is not about saving an hour\'s electricity. It\'s about realising that we live on a ____ planet and need to look after it - not just for an hour a year but every day. (WONDER)
B6: The Earth Hour is a part of an ____ education whose aim is to make people understand their responsibility to the planet.