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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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3. promise(n.) to sb to do/ of n. /in n.
the promise to do 做某事的保证
the promise of n. 两种用法，一个是关于某事的保证，比如 a promise of job opportunity/certain benefits,另一个是来自某人的保证，比如 the promise of America/ God。the promise of 后面很少有doing，如果有动词选择to do 的形式。
promise in更多的是 promise 所处的状况，比如He made a promise in the campaign，如果有动词选择to do 的形式。
综上，排除CDE
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