Use the apostrophe. I've also seen it as New Year Eve without the possessive at all, as in Christmas Eve.

1 The plumber said he'd stop by anytime between 10 and 12pm./somewhere between 10... I'd prefer "sometime" to "anytime". It would be more appropriate to use "anytime" in order to give someone permission to

1 The plumber said he'd stop by anytime between 10 and 12pm./somewhere between 10... 2 The two bad things about this apartment is its lighting. Its not bright at all, and that its on the 5th floor. 3 There are more cards that you need to avoid

"Their" is a possessive adjective. You use it when you want to say that something belongs to something else, like, "their website" (the website belongs to them) It is a kind of universal pronoun, not commonly used to refer to

No, "father" needs either an article or possessive pronoun. His father, my father, the father and his son... If you actually call him "Father" (like I say "Dad") the capitalize it, without the article. "Father,

"I live in a small house with my parents and my brother and sister" In the sentence above, are supposed to use and article or a possessive pronoun before brother and sister ? ...or while talking about father... "I have a father.

Sentences like "I live with my parents and brother and sister" or while talking about fathers or mothers mentioning them time after time, do we use a definite article or are we supposed to use a possessive pronoun each time? e.g.

Avangi, Thanks. "the" modifies "market share," not "investment banks'." Pardon my ignorance, but I think 'market share' does not need any article as it is clearly defined by the possessive "

These are correct. Are you supposed to make the nouns possessive?? My take would be: The monkey's tail The two deer's antlers The Rosses' two dogs (We'd prefer that you take a stab at something like this before asking for help.)

The monkey has a tail.  the antlers of two deer. The Rosses have two dogs.