1.at-on
2.played-play
3.Are-Is
加油啊，祝你进步
1. at - on
2. played - play
3. Are- Is
at -> on
played _ play
are -> is
at-on
palyed-play
are-Is
1.at 改成 on
2.played 改成 play
3.Are 改成 Is
1.把at改为on
2.把played改为play
3.把Are改为Is
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