Need a method so that extra spaces automatically get removed from end of the sentences in MS Word 2013

Question

hello
i have some documents (pasted from other applications), in which at the end of some sentences, an extra space exist before ending dot (.).
for example "this is an article ." so it is assumed as error.
is there ant trick or method or micro so that all extra spaces be automatically removed from end of sentences & for example the above sentence becomes so:
"this is an article."
thanks in advanced

Answer 1

Press Ctrl+H to activate the Replace dialog.
Enter a space followed by a period (dot) in the Find what box.
Enter a period (dot) in the Replace with box.
Click Replace All.
(If you don't like the result, you can undo it by pressing Ctrl+Z)
Regards, Hans Vogelaar (http://www.eileenslounge.com)
Hi Hans
cool, thank you very much
but here another problem arises. the source document is like this:
"this is an article .we discuss IT here."
after your approach it becomes:
"this is an article.we discuss IT here." ---> here MSword shows another grammar error because . is atached to "we".
any guide to resolve this problem as well
thanks in advanced