The Public Transport Commission’s commitment to running our city’s trains and bu

游客2025-06-15 2

问题 The Public Transport Commission’s commitment to running our city’s trains and buses as______as possible has reduced costs to the taxpayer by 5%.

选项 A、efficient
B、efficiency
C、efficiently
D、efficiencies

答案 C

解析横线处需要填入形容词或副词。填入形容词可修饰前面的名词或充当表语，填入副词则修饰动词。根据本句结构，横线处所填单词需要修饰running。故选副词(C)efficiently。

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