to improving services, we will provide customers with all the information they need.
A. Being mitted
B. Having mitted
C. Committed
D. Committing
网友回答
A. Being mitted
B. Having mitted
(答案→)C. Committed
D. Committing
解析： 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 mitted to doing sth承诺做…，用过去分词做状语，相当于Because we are mitted to improving services，选C。