I don't see why not. When two people marry, the women sometimes wants to keep her maiden name but also take his name, so she takes both last names and hyphens them. Or I have even seen a single mom use both the dad's last name and her last name (hyphenated) for their child. Please visit this page on my website to get detailed information on this subject. http://www.child-adoption-matters.com/adopting-a-stepchild.html
There is no hyphen in "in turn." The principal talked to each of the children in turn.
Exactly the way you did in your question. The term father-in-law is hyphenated, and the addition of the ex- prefix requires a hyphen as well. This is not a standard genealogical term, and it may be clearer to say "ex-husband's father" or ex-wife's father.
It depends. Probably the moms. However, it's up to the parents. You do have a choose but often the child gets the fathers last name if he is on the birth certificate. Think of your baby and relationship with the father. Are you still together? Will the baby have a part in its fathers life? If the answer is yes I would suggest giving the child the privilege of having their fathers last name. You could also hyphen if you wanted to...
Yes, there is. Often, after a hyphenated word has been used for a very long time and is used by many people, the hyphen will be eliminated. Email is an example of this. Originally the word was e-mail.
You say "A hyphen" because the sound of the letter "H" at the beginning of the word "hyphen" is pronounced, making it a consonant sound.
No, it does not have a hyphen.
It Is A Special Hyphen
A colon is this : and a hyphen is this -
multimedia - NO hyphen
hyphen
No there's not a hyphen.
It does not need to have a hyphen! :)