作业帮是playing a piano 还是playing piano
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 03:14:33
是playing a piano 还是playing piano
是playing a piano 还是playing piano
是playing a piano 还是playing piano
playing the piano
乐器前用the
这里只有选前者了
playing the piano
play the piano必须加定冠词
playing the piano