◎ 题干
Gone are the days when China, a major economic power in Asia today, ________ at the mercy of others.
[     ]
A. was  
B. is
C. had been  
D. were
◎ 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“Gone are the days when China, a major economic power in Asia today, ________ at the mercy of others.[ ]A. wasB. isC. had beenD. were…”主要考查了你对  【一般过去时】【主谓一致】  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。