A conjunction can be placed after the comma to make the sentence make sense (i.e. and, so, ect).
The correct answer is (b.) men's. The men's shouts filled the dark night. If you are referring to many male persons, you may use men. You need not any usage of s with men since men is already in a plural form which makes it wrong.
U can interact with the audience more. Less time consuming.
Answer: It is not. The correct way of saying that is ''We have known each other for just a while.''