We often hear him ______ in the classroom.A.sing B.singing C.to s_英语解答

We often hear him ______ in the classroom.A.sing B.singing C.to sing D.sung
到底是选sing 还是singing呢具体理由

人气：132 ℃　时间：2020-05-04 03:04:13

解答

A.hear sb. do sth.听某人做某事..因为句中有一个often表示经常发生的动作.我们用do表示.如果用singing,则是进行时.那就与often不符了