单项选择题

The price of the coal will vary according to how far it has to be transported and how expensive the freight （）are.

A. payments
B. charges
C. funds
D. prices

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If these measurements also reduce unemployment, that is （）.

A. as good as
B. to the good
C. all to the good
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What became （）the student who used to live with you

A. of
B. out
C. up
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