单选题For holidays  many people

问题补充：

单选题Forholidays,manypeoplevisittheGreatBarrierReef_____thenortheastcoastofAustralia,whichhas700islands.A.onB.inC.toD.off

答案：

D解析off在离……的海上。又如：islands off the coast of Fujian福建沿海的岛屿。