Twice a year, in spring and autumn, London's fashionistas go 1at the second of the world's "big four" fashion weeks. From September 16th to the 21st, 68 catwalk shows 2the wares of mainly British-based designers, with celebrities in 3. A study by Oxford Economics for the British Fashion Council(BFC)found that the business added about ￡21 billion to GDP directly, twice as much as car making. High fashion accounts for only a 4of that, but top-end, trend-setting design sits at the heart of the broader retail market. The BFC, which stages London Fashion Week, estimated that its six days will have 5perhaps ￡ 100 million in orders. More than that, fashion is just the sort of thing Britain is 6to be good at in this post-industrial age: creative, high-value-added, cluster-based. And the country does excel. But there are characteristically British 7, too. Many designers have trouble 8their ideas into cash. This is only partly because capital is hard to come by. "Here, it' s all about art. In other places it's much more of a business," says a Central St Martins student who has worked in France. The 9for a number of new designers agrees: "Young designers here just make what inspires them without thinking enough about how much they'll have to 10for it, or who will buy it." A great many fold after a few years. A big challenge now is to conquer developing markets before developing-world fashion houses conquer Britain.A)merits B)transmitting C)converting D)supposedE)charge F)crazy G)displayed H)delightedI)agent J)downsides K)yielded L)fractionM)account N)majority O)attendance