—Amy, I called you yesterday evening, but nobody answered the phone.

—Oh, I _______ a walk with my mother at that time. [ ]

A. take

B. took

C. am taking

D. was taking

材料2、3、4、5当中包含或暗含了一些社会上对诚信问题的错误认识，请你根据所给材料，概括出这些错误的认识是什么。要求：概括全面、表达精炼、语言流畅；字数在300字左右。