Example sentences of "have be [v-ing] for about [num] " in BNC.

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1 It 's a kind of health farm and you go there to sample a simple lifestyle which Mongolians have been enduring for about 3,000 years and you are going to put up with for twenty-four hours .
2 Of course the Scandinavians have been skiing for about 4,500 years , but they used it as a means of travelling across country , not as an activity in itself , that has only happened in the last hundred years .
3 The Lemonheads have been touring for about three months , first in America and now in Europe , and this has been the first real glitch they 've encountered .
4 After you have been walking for about ten minutes take your pulse .
5 I have been playing for about 13 years now , and doing so for pleasure .
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