Question

We often heard Peter and his friends _________ in his room last term.

A. sing B. to sing C. sings D. singing

Answer 1

A

【解析】

试题分析：句意:上个学期我们经常听到Peter和他的朋友们在他的房间里唱歌。sing 唱歌，是一个动词；to sing 动词不定式；sings第三人称单数形式；singing 现在分词。hear sb. do sth.听到某人做某事，故选A。

考点：考查非谓语动词。