we often hear her _______(sing) English songs in the next room.主要要原因,
问题描述:
we often hear her _______(sing) English songs in the next room.
主要要原因,
答
是 singsing
答
应该填singing ,hear somebody doing ,所以后面填动词的ing 形式
答
singing .
hear doing 固定用法
答
singing
答
sing
hear doing sth