◎ 题干
She couldn't have entered the competition, but, for lack of confidence, she _______.
[     ]
A. couldn't
B. didn't
C. doesn't
D. hadn't
◎ 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“She couldn't have entered the competition, but, for lack of confidence, she _______.[ ] A. couldn't B. didn'tC. doesn't D. hadn't …”主要考查了你对  【一般过去时】  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。