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Up to now, historians that calendars came into being with the advent of agricult

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Up to now, historians that calendars came into being with the advent of agricult

 Up to now, historians ______that calendars came into being with the advent of agriculture.

A. had assumed     B. are assuming          C. assumed           D. have assumed

试题答案

D

标签：camecalendarsbeingintothat

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