下列各句中，没有语病的一句是（    ）

根据对话情景, 在横线上填入适当的单词补全对话。

A: Mary, what do you ____ of your new school?

B: I like it very much. But there are too ____ rules.

A: What are the rules?

B: First, girls can't have long hair.

A: What? That's really an ____ rule.

B: Interesting? I think it's awful.

A: Do you have to cut your hair?

B: Yes, I do.

A: What ____ rules does your school have?

B: We can't ____ sunglasses. I can't stand (容忍)that. Sunglasses are my favorite.

A: That's a terrible rule.

①是以实际行动服务社会，奉献社会  ②可以使自己在社会实践中得到锻炼
③只是小事，没有什么积极意义          ④能够在小事中体现自身的价值