2. 外语
  3. Nobody knows how people first came to these islands. They_____from South America on rafts.

Nobody knows how people first came to these islands. They_____from South America on rafts.

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问题 Nobody knows how people first came to these islands. They_____from South America on rafts.
选项 A、must have sailed
B、can sail
C、might have sailed
D、should have sailed
答案C
解析
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C类竞赛（非英语专业本科）

大学生英语竞赛（NECCS）

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