the police were told that some boys were seen_ on the streetA to play B.playing C.to be playing D played.
问题描述：
the police were told that some boys were seen_ on the street
A to play B.playing C.to be playing D played.
答
绝对b
答
B，状语
答
这个句型是see somebody doing sth,看见某人正在做某事改成被动的话,就是某人被看见正在做某事 就是B选项中的 some boys were seen playing on the street