A number of pupils are playing hide and seek,the number of whomis twelve.
A number of pupils are playing hide and seek,the number of whomis twelve.
一些学生在那捉迷藏，（学生的）总数是十二人。
A number of pupils are playing hide and seek,the number of whomis twelve.
一些学生在那捉迷藏，（学生的）总数是十二人。