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题库 / Prep2007E1-SC-105
Even though it was not illegal for the bank to share its customers' personal and financial information with an outside marketing company in return for a commission on sales, the state's attorney general accused the bank of engaging in deceptive business practices by failing to honor its promise to its customers to keep records private.
by failing to honor its promise to its customers to keep
by its failure of honoring its promise to its customers to keep
in its failing to honor its promise to its customers of keeping
because of its failure in honoring its promise to its customers in keeping
because of its failure to honor its promise to its customers of keeping
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1. idiom promise sb to do sth
2. AB选项，by doing sth这里修饰的都是就近的动词，A：by failing to do...句意完整；B：抽取核心词by its failure 只提到了失败，句意不完整，比较之下选A
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