The workers are going through with their railway project, ________ the expenses have risen．A.as long asB.even thoughC.now thatD.as though
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B解析as long as表示“只要”，引导条件状语从句；even though/even if“即使”，引导让步状语从句；now that“既然”，引导原因状语从句；as though/as if“似乎，好像”，引导方式状语从句。