I believe that pacing refers to the speed at which the speaker pronounces words and phrases, basically the speed at which somebody talks.
You could use a topic such as "2 common breeds of dogs and their characteristics" or "How to raise a tomato plant from seed" or "Critical tips for surviving in the wilderness", etc. (Basically, you need to do it on a topic you are familiar with and interested in)
No, it is false that traditional grammar is still completely based on the Latin model, since many of the ways in which grammar has shifted have noting to do with the original Latin forms.
hoped I helped!!
Here is the sentence using the words capacity and regulation:
The capacity of the hall can only accommodate at most 500 people; therefore, strict regulation of the flow of the people going in and out must be observed all the time. Regulation means control or management. Capacity means the amount or size that something can contain. Hope this answer helps.