◎ 题干
Since June 1st last year, all the supermarkets have ______ free plastic bags.
[     ]
A. to stop to provide
B. to stop providing
C. stopped to provide
D. stopped providing
◎ 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“Since June 1st last year, all the supermarkets have ______ free plastic bags.[ ]A. to stop to provideB. to stop providingC. stopped to provideD. stopped pro…”主要考查了你对  【动名词】  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。