"On a date" is correct when talking about going out with someone. You would say "Tom is going on a date with Betty," not "Tom is going in a date with Betty."
"In a date" would be used when talking about the fruit date and something inside of the date. "There are seeds in the date," or "Molly put goat cheese in the date."
They are both somewhat correct, but 'on what date' is the most used one.
Yes, Almighty God is grammatically correct.
"That was wrong" is a grammatically correct sentence.
Yes, it is grammatically correct.
This sentence is grammatically correct.
No, it is not grammatically correct. If you want someone to correct it for you, please can you explain what you are trying to refer to?
Usually, either can be correct. Consider: "It was the 25th of June." and "May 13th, the day it all went wrong." However, when using the contracted form of the date, it's not grammatically correct. Example: "It was the 25/6/09" isn't grammatically correct.
"Not like that" can be grammatically correct, depending on the context.
The phrase "Is you don't miss me do you" is not grammatically correct. It should be rephrased to something like "Don't you miss me?" to be correct.
Yes! That is grammatically correct!
Yes, 'for free', is grammatically correct.
The phrase "You are not knowing" is not grammatically correct. Instead, you can use "You do not know" or "You are not aware."
"That was wrong" is a grammatically correct sentence.
Yes, it is grammatically correct.
Yes, Almighty God is grammatically correct.
The sentence "Rhoda's Crazy" is not grammatically correct. It is missing a verb to make a complete sentence.
'What a drunkard you are' is a grammatically correct English sentence.
"For free' is grammatically correct. It is an idiom of the English language.