✅ 同义词
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
You cannot break the contract without any good reason.
如果没有什么正当理由，你们不应撕毁合同。
Then give us three cases of this.
那么这种的就买三箱好了。