27．If we keep on polluting the environment, the white plastic rubbish will be the last thing to tell——青夏教育精英家教网—

摘要：27．If we keep on polluting the environment, the white plastic rubbish will be the last thing to tell other creature that “ once an earth. A． there was B． there is C． it is D． it was

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If we keep on polluting the environment, the white plastic rubbish will be the last thing to tell other creature that“________ once an earth.”