Question

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

A．Being committed	B．Having committed
C．Committed	D．Committing

Answer 1

C

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。