Answer:
The Answer Is; A Dependent Clause Cannot Stand On It's Own
Explanation:
I Know Because i Got it Right On My Quiz lol
A story presented as a play
By writting letters back and forth to one another
A slogan is a short phrase usually used in advertisement or something. So, to make an "Advertisement" on the English language, you could use the slogan "Speak in English fluently and be competitive globally", or maybe "Speak English, Speak sense and knowledge", or "Learn English to access the world", and many others.
Hope this Helps! :)