在美式英语中，常用“fall”这个词来指夏季之后的季节。

The word "fall" is commonly ___used in American English for the season after summer.

在正式演讲中，你应该使用精确且尊重的语言。

In formal speeches, you should ___use precise and respectful language.

记得使用“请”和“谢谢”来表现得有礼貌。

Remember to ___use "please" and "thank you" to be polite.