摘要： 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
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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 |
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Nobody knows how people first came to these islands. They ______ from South America on rafts.
A. must have sailed B. can have sailed
C. might have sailed D. should have sailed
查看习题详情和答案>>
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 |