听力资源简介：

rule　
(n.) 规则，规定

It is a rule in our classroom that you can't talk when the teacher is talking.
我们教室里有条规定是当老师说话的时候，你就不能说话。

guest　
(n.) 客人

My mom said I could ask ten guests to my party.
我妈说我可以邀请十个客人来参加我的派对。