高等教育 / 新发展英语综合教程（二）
John Light bought the "Lusitania" _ _ _ _ _ _ _ .
A.before 1915
B.before it sank
C.after it sank
D.rafter they had brought up the propellers
A.before 1915
B.before it sank
C.after it sank
D.rafter they had brought up the propellers
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