For questions 1-8, read the text below and decide which answer (А, В, C or D) best fits each gap. There is an example at the beginning (0).
The Space Age began 0 _____ over half a century ago, and ever since then the area just 1 the Earth’s atmosphere has been filling up with all kinds of man-made objects that have become 2 as ‘space junk’. The items up there 3 from old satellites and parts of rockets to hundreds of thousands of pieces smaller than one centimetre, all of them travelling at extremely 4 speed. Over the last five years, the number of such objects in space is 5 to have risen by 50 per cent, and this has 6 increased the risk of damage to working satellites or space vehicles with crews on board.
International agreement has therefore now been 7 on limiting the amount of new space junk. Scientists have also 8 some interesting suggestions for tidying up space. These include using laser beams, giant nets and even an enormous umbrella-like device to collect tiny bits of junk.