◎ 题干
It's exciting to be a chairperson, but I'm _____ my ability to do all the extra work.

[     ]

A. looking about
B. learning about
C. quarrelling about
D. worrying about
◎ 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“It's exciting to be a chairperson, but I'm _____ my ability to do all the extra work. [ ]A. looking about B. learning about C. quarrelling about D. worryi…”主要考查了你对  【动词短语】  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。