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UNLESS WE TAKE STEPS TO PRESERVE NATURAL RESOURCES...
UNLESS WE TAKE STEPS TO PRESERVE NATURAL RESOURCES; THE PLANET WILL BE IN DANGER
BAI TAP TRAC NGHIEM HKI I GV
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66. Unless we take steps to preserve natural resources; the planet will be in danger.
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66.
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BAI TAP TRAC NGHIEM HKI I GV