Before windows were used,old houses in Northern Europe and Britain _ very dark.Their great rooms were high,with only

_ hole in the roof (屋顶) to let out the _ from cooking fires.As time went _ ,people began to make the holes bigger

_ as to have more light and air in their homes.

The first English window was just a small opening　　　　the wall.It was cut long,to let in _ much light as possible,and narrow ,to keep out the bad weather .However,with the window cut long,

_ wind than light would come in.This is _ it was called”the wind’s eye”.And the word “window”comes from two ancient words for “wind”and “ _ “.