every class has rules, like no smoking, no eating and no sleeping. our class is not very good, because some students are talking when someone is speaking.

　　in the class, we should observe others by rules. now, i list some rules in class:

　　1. no talking when someone is speaking.

　　2. no sleeping in class.

　　3. no eating or drinking in class.

　　4. be always on time.

　　5. no playing in class.

　　6. no laughing when someone makes a mistake.

　　these rules are just my opinion, but i think if our class has such rules, we can study better.