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单选题 Nobody knows how people first came to these islands. They ___________ from South America on rafts

A. must have sailed

B. can sail

C. might have sailed

D. should have sailed

[共享课]英语语法（吉林联盟）课程封面

学科：[共享课]英语语法（吉林联盟）

时间：2023-05-09 09:37:24

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