Question

【题目】If you have any questions, please _____free to e-mail me at YH@163. com.

A. feel B. feeling C. to feel

Answer 1

【答案】A

【解析】

句意：如果你有任何问题，请在YH @ 163免费给我发电子邮件。A. feel 感到，原形；B. feeling感到，现在分词；C. to feel去感到，动词不定式；feel free to do sth．随意做某事．这里是祈使句用动词原形开头。根据题意，故选A。