Yes, it's called Out of Sight Out of Time, and it comes out on March 13, 2012.
According to Ally Carter( the author of the Gallagher Girls series) it depends on the how her writing goes. But right now yes, she is planning to write a sixth book to the Gallagher Girls Seires.
The authour (Ally Carter) said she would at leas write six gallagher girl book but she said there could be more depending if she can fit thw whole story into six books.
I'm Not Awake Yet,Used to Be,Don't Know Where I'm Going,Maybe I Will
her right hand
There isn't going to be a fifth book going on into Nessie's life or whatever, but there will be a fifth book called Midnight Sun. It's Twilight from Edward's point of view. It has been postponed though, because someone leaked the first 12 chapters out to the public.
Fifth Century - 5th Century.
one and one-fifth
Yes, the book is called The Last Olympian
حامل العربة this is how you write it
10 to the fifth power = 105
One-fifth is 1/5 or 0.2
After the fourth.