I wonder how much you charge for your services.---

问题补充：

I wonder how much you charge for your services.-----The first two are free

答案：

Awhile这里表示轻微转折的意思,另外几个体现不出转折的意思

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供参考答案1:

选A while有但是的意思 表示转折 望采纳！！