Federal authorities involved in the investigation have found the local witnesses are difficult to locate, reticent, and are suspicious of strangers.
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Athe local witnesses are difficult to locate, reticent, and are
分析该选项
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Blocal witnesses to be difficult to locate, reticent, and are
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Cthat local witnesses are difficult to locate, reticent, and
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Dlocal witnesses are difficult to locate and reticent, and they are
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Ethat local witnesses are difficult to locate and reticent, and they are
分析该选项
显示答案
正确答案: C