When we went past her house we heard her in her room.A. danceB. dancingC. singD. singing

问题补充：

When we went past her house, we heard her in her room.

A. dance

B. dancing

C. sing

D. singing

答案：

A. dance

B. dancing

C. sing

(答案→)D. singing

解析：考查感官动词。hear sb. do sth.“听到某人做了某事”；hear sb. doing sth.“听到某人正在做某事”。句意“当我们经过她的房子时，我们听到她正在唱歌。”故选D。