17. Native American burial sites dating back 5,000 years indicate that the residents of Maine at that time were part of a widespread culture of Algonquian-speaking people. (A) were part of a widespread culture of Algonquian-speaking people (B) had been part of a widespread culture of people who were Algonquian-speaking (C) were people who were part of a widespread culture that was Algonquian-speaking (D) had been people who were part of a widespread culture that was Algonquian-speaking (E) were a people which had been part of a widespread, Algonquian-speaking culture 有人看过这道og的题马,我对a的句子结构不太懂,谁能帮忙解释一下吗? |