I often hear her _(sing) in the morning ,填什么?为什么

问题描述:

I often hear her _(sing) in the morning ,填什么?为什么

I often hear her singing in the morning.
hear +sth
her singing(她的唱歌)

hear sb do sth表示“听到某人做了某事”,hear sb doing sth.表示“听到某人正在做某事”
既然是often,那就是sing喽