save , rubbish bin, litter bin , survive, environment , , save , environment , turn off the light , rubbish bin, litter bin , , environment , save , rubbish bin, litter bin , survive, , rubbish bin, litter bin , save , survive, environment , , turn on the light , environment , rubbish bin, litter bin , survive, , save , rubbish bin, litter bin , turn on the light , turn off the light .

5.2 c

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