◎ 题干
Kate's dad is getting old. She will go back home to see him _____it is convenient.    
[     ]
A. because    
B. whenever    
C. although    
D. unless
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Kate's dad is getting old. She will go back home to see him _____it is convenient.[ ]A. because B. wheneverC. although D. unless…”主要考查了你对  【连接副词】  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。