The price of the coal will vary according to how far it has to be transported and how expensive the freight______are.
【正确答案】 B
【答案解析】本题中payments“支付、付款”；charges“价钱、费用”；funds“基金、专款”；price“价格、代价”。根据题意，我们要填的词须和freight构成搭配关系，应选B，freight charges是货运费的意思。