根据给出的首字母填空，使其内容通顺。
Before windows were used ,old house in Northern Europe and Britain were very d__1__.Their great rooms were high with only one h___2__ to let the smoke out from cooking fire .As time went on ,people began to make the holes b__3__ in order to have more light and air in their homes.
The first English window was just a small opening in the wall .It was cut down long to let in as much light as p__4__,and narrow,to keep out the bad weather .H___5__ ,with the window cut long ,more wind than light would come in .This is why it was c___6__ "the wind 's eye ".And the word "window " comes from two a__7__ words for "wind "and "eye".

1.dark
2.hole
3.bigger
4.possible
5.However
6.called
7.another