◎ 题干
If you keep on,   you'll succeed ________.
[     ]
A. in time  
B. at one time
C. at the same time  
D. on 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“If you keep on, you'll succeed ________.[ ]A. in timeB. at one time C. at the same timeD. on 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。