My company has entered into.....
"went out in the company of your friends" is correct.
Group of companies is grammatically correct.
If you use "with" it indicates there's a company of friends and you went with them. If you use "in" it indicates you are part of the company.
"Not like that" can be grammatically correct, depending on the context.
Yes it is a grammatically correct
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.
Yes, it is grammatically correct.
Yes, Almighty God is grammatically correct.
'Rhoda's crazy' is grammatically correct.