After being discovered by Dutch explorers in 1606，the eastern half of Australia by the British in 1770．
A. was claimed
B. claimed
C. was claiming
D. has been claimed
网友回答
(答案→)A. was claimed
B. claimed
C. was claiming
D. has been claimed
解析：根据句意，“澳大利亚东部被不列颠据为己有”，此处要求用被动语态。