Of all the British Isles, the largest one is called__1___. The groups of invaders from northern Europe which took possession of the British island in the 5th century include____2___, ____3___ and___4____. The only country with which Britain shares land border is_____5_______. Roughly the island of Britain can be divided into two parts: a___6___ in the north and west and a__7___ in the south and east. Based on the variability of the weather and small differences between the seasons, it is claimed that there is no ___8___ but ___9___in England. The abundant rainfall in England is mainly due to its __10__ type of climate. It is a fact that London has a reputation for __11___, and often people abroad visualize London a city shrouded in dense ___12_. The excessive use of __13_ and the ___14___ are the two factors which led to the large cities in Britain to be shrouded in fog.