how long __the movie ___? for about seventy minutes (did begin\\\has been on\\\has begun\\\has been

问题描述:

how long __the movie ___? for about seventy minutes (did begin\\\has been on\\\has begun\\\has been

has been on 表示状态,电影放映7分钟时状态,
be on 放映,其他的都不对