题目内容：

I heard your daughter _____in the next room at ten last night.A. sang B. sing C. singing D. sings
为什么用singing?

优质解答

hear sb doing sth 听见某人正在做某事
昨晚十点我听见你女儿正在隔壁房间唱歌
不明白的再问哟,请及时采纳,多谢!