Ducks and geese also passed northward early in June, indicating plainly the existence of suitable feeding-grounds in the undiscovered and mysterious North. [Please select]
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With a light foot, therefore, I carried out my first intention, and drawing back undiscovered, sneaked up the staircase to my room. [Please select]
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To attempt to get through undiscovered would be an act of the most frantic temerity. [Please select]
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Nearly all of their natural resources, in 1865, were still lying fallow, and even undiscovered in many instances. [Please select]
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