Whatareonshowinthemuseum?一一Somephotos（）bythechildrenofYushu,Qinghai.AhavebeentakenBweretakenCaretakenDtaken
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题目内容：
What are on show in the museum?一一Some photos（）by the children of Yushu,Qinghai.
Ahave been taken
Bwere taken
Care taken
Dtaken
优质解答
D 过去分词作定语,省略了which were.
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