--what are on show in the muesum?--some photos_____by the children of Yushu ,Qinghai.
问题描述:
--what are on show in the muesum?--some photos_____by the children of Yushu ,Qinghai.
为什么不用were taken
答
加入用were taken 的话 拍照片的人就成了玉树的儿童
而这句话强调的是玉树儿童的照片