For questions 1 to 8, read the text below and think of the word which best fits each gap. Use only one word. in each gap. There is an example at the beginning. Write in capitals. 0: THE Aurora borealis - the northern lights - is one of (0) world's most magical firework displays. These displays (1) ... light are most intense around the North pole, so in (2)... to experience them fully on a dark winter's night, you should ideally be in the Arctic Circle. The lights are actually tiny glowing particles from the sun, travelling on a solar wind. When these particles come past the earth, they are trapped by (3)... magnetic field and rapidly fall towards the pole. Although the displays occur all year round, the number varies in (4) ... one year, depending (5)... the sunspot cycle. You need to be (6)... from the glow of the city on a cloudless night to see the northern lights properly, and people (7)... have witnessed them say they are unforgettable. At (8).... brightest it's possible to read a book in the middle of the night as the whole area is lit up.