◎ 题干
_____ you are in trouble, let me know. I'll give you a hand.

[     ]

A. Whenever
B. Wherever
C. However 
D. Whatever
◎ 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 are in trouble, let me know. I'll give you a hand. [ ]A. Whenever B. Wherever C. However D. Whatever …”主要考查了你对  【从属连词】  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。