There is no true meaning behind it.
It will help you be able to plan for the amount of time that will be needed
The balanced rythmic flow of poetry or oratory is referred to as cadence.
Cadence is the rise and fall of the voice that creates a melodic pattern when reading, or even when talking in general. Some languages have a cadence that is more pronounced than others, such as Italian.
A change in cadence can also influence the meaning of a sentence or word. For example, saying "He is a great person" can mean very different things depending on where the emphasis of the intonation is. If the cadence emphasizes "great" instead of "person", the sentence could have a sarcastic meaning.
Well none of them are correct because it would have to be _____ ARE for dinner tonight. or if you need it to be it would have to be It is _________ for dinner tonight.
Be the happy or nice character! ps:this is your opinion for the question, so it's your thoughts, there is no right or wrong answer!