HOW LONG ... ?
HOW LONG HAVE YOU STUDIED ENGLISH
HOW LONG ... ?
HOW LONG HAS HE KNOWN HIS BEST FRIEND
HOW LONG ... ?
HOW LONG HAVE THEY HAD THEIR DOG
FOR OR SINCE
FOR
HOW LONG ... ?
HOW LONG HAVE YOU LIVED IN YOUR FLAT
FOR OR SINCE
FOR
FOR OR SINCE
SINCE
FOR OR SINCE
SINCE
HOW LONG ... ?
HOW LONG HAVE YOU HAD YOUR MOBILE PHONE