◎ 题干
You can come here to ask me _____ if you have any questions.

[     ]

A. at one time
B. at your time
C. at any time
D. all the time
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“You can come here to ask me _____ if you have any questions. [ ]A. at one time B. at your time C. at any time D. all the time …”主要考查了你对  【介词和介词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。