no, the only time you would use an apostrophe in when a person's name comes before the word "birthday." For example 1: Mike's birthday 2: their birthdays 3: the boy's birthday (singular) or the boys' birthdays
No, the correct grammar would be "More birthdays to come."
you dont use an apostrophe in will not
you do not use an apostrophe in cultures.
No, the word "that" does not require an apostrophe to show possession. The possessive form of "that" is simply "that's."
An apostrophe is used in contraction. Example: you will: you'll
There is not apostrophe in June. But, there would be apostrophe in the following example: June's car was totaled in the accident.
If you are indicating possession (Achilles' heal) use an apostrophe at the end of the word. If you are simply stating his name, there is no apostrophe.
it's (as in it is)
aren't
No
When it is a possessive, use apostrophe. The waitress's coat was stolen. The waitresses' paychecks were cut.