【正确答案】 A

【答案解析】此题属于语意搭配题。commit oneself to表示“承诺，答应负责”，如：He has committed himself to support her family．根据原文内容：六国打算减少央行的财政预算赤字，并做出承诺，故选项[A]committed正确。选项[B]devote表示“献身于，致力于”；选项[C]adjust表示“使……适应”，如：He adjusted himself quickly to the heat of the country．选项[D]attribute表示“归因于”，如：He attributed his success to hard work/working hard．