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_____ to improving services, we will provide customers with all the information they need.

A.Being committedB.Having committed
C.CommittedD.Committing

C

解析试题分析: 句意:承诺要提高服务,我们会给顾客提供他们需要的信息。Be committed to doing sth承诺做…,用过去分词做状语,相当于Because we are committed to improving services,选C。
考点:考查过去分词做状语

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