Yes it is correct, but in text is should be written 'a thousand organizations'. Either is correct however:
We have a 1000 organizations on our mailing list.
We have a thousand organizations on our mailing list.
You should add commas after "Boston," "Massachusetts," and "1000" to make the address grammatically correct. This would result in "Boston, Massachusetts, 1000, Massachusetts."
"Not like that" can be grammatically correct, depending on the context.
Yes! That is grammatically correct!
Yes, 'for free', is grammatically correct.
This is not grammatically correct. The correct form is 'you do not know', or the abbreviated 'you don't know'.
"That was wrong" is a grammatically correct sentence.
'What a drunkard you are' is a grammatically correct English sentence.
Yes, Almighty God is grammatically correct.
Yes, it is grammatically correct.
Sure. It would also be grammatically correct to write He spoggled his nubbix on the goober. Grammatically correct and meaningful are not the same.
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.
No, it is not grammatically correct. The correct way to say it is "your older sister."