_____to improving services, we will provide customers with all the information.

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问题 _____to improving services, we will provide customers with all the information.

选项 A、Committed
B、Committing
C、Having committed
D、Being committed

答案A

解析考查非谓语动词。句意为“承诺要提高服务，我们会给顾客提供所有的信息”。be committed to doing sth．“承诺做某事”。这里用过去分词(短语)做状语，相当于状语从句“Because we are committed to improving services”。

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