中译英 1.课堂上不讲话,请认真听老师讲课.2.请安静.我们正在开一个重要会议.3.晚饭后请刷一刷这只狗

1. does not speak in class, make sure to listen to the teacher.
2. Please be quiet. We are having an important meeting.
3. After dinner, brush your brush a dog
4. in the classroom was very hot, you open the doors and windows.
5. to be more careful next time, Do not make so many mistakes.