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【单选题】

We would like to remind our clients that, should they have any problems ______ our products, our after-sales hotline service is available 24 hours a day.

A．to
B．at
C．for
D．with
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根据网考网移动考试中心的统计，该试题：

1%的考友选择了A选项

6%的考友选择了B选项

5%的考友选择了C选项

88%的考友选择了D选项

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