Nobody knows how people first came to these islands. They ____ from South America on rafts. 第八章单元测试 A. must have sailed B. can sail C. might have sailed D. should have sailed
正确答案：C
公务员|事业单位|职业资格等考试题库!
Nobody knows how people first came to these islands. They ____ from South America on rafts. 第八章单元测试 A. must have sailed B. can sail C. might have sailed D. should have sailed
正确答案：C
