来自强韶华的问题
Iheardthemsingintheclassroom.是对的,为什么Iheardthemsingingintheclassroom.不对?正在唱歌不应该用singing吗?
Iheardthemsingintheclassroom.是对的,为什么Iheardthemsingingintheclassroom.不对?
正在唱歌不应该用singing吗?
10回答
2020-12-1816:49