作业帮i often hear this song_____(sing),but i have never hear her____(sing) it. 下面还有Listen!you can hear her____ it now.这三个空怎么填,讲一下为什么
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i often hear this song_____(sing),but i have never hear her____(sing) it. 下面还有Listen!you can hear her____ it now.这三个空怎么填,讲一下为什么
i often hear this song_____(sing),but i have never hear her____(sing) it. 下面还有
Listen!you can hear her____ it now.这三个空怎么填,讲一下为什么
i often hear this song_____(sing),but i have never hear her____(sing) it. 下面还有Listen!you can hear her____ it now.这三个空怎么填,讲一下为什么
sung被动,sing主动,且表示频率,singing主动,且表示正在发生