_____________ to improving services, we will provide customers with all the i...

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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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