单项选择题

Lincoln proclaimed that the problem of setting free the black slaves should () immediate solution.

A. call off
B. call for
C. call on
D. call in

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单项选择题
He knows little of English to say () of English culture.

A. something
B. everything
C. nothing
D. anything
单项选择题
Allen Smith is a dancer, choreographer, and () .

A. dance that she teachers
B. her teaching of dance
C. dance teacher
D. to teach dance
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