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A. They brushed their teeth with a toothbrush which was made of horse hairs.
B. They brushed their teeth with a toothbrush which was made of wild boar hairs.
C. They cleaned their teeth with a cooper toothpick.
D. They cleaned their teeth with a goose feather toothpick.

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A. Siberian wild boar hairs.
B. Horse hairs.
C. Goose feather.
D. Nylon fibers.

A. In 1936.
B. In 1937.
C. In1938.
D. In 1939.

A. They were finally neglected.
B. They were finally recognized.
C. They were finally freed.
D. They were finally rescued.

A. Because of their insanitariness.
Because of their longevity.
C. Because of their price.
D. Because of their stiffness.