Example sentences of "[pron] have [been] working at " in BNC.

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1 In the three years or so that I have been working at Joan Allen Electronics I have become acutely aware of battery problems , in particular from the many cases where detectors have been sent back for repair needlessly .
2 I have been working at the playgroup in Middleton St George for about seven years now , and I 've been the leader for about two .
3 The gallery represents those painters and graphic artists from eastern Berlin who have been working at the dissolution of figuration into pure chromatic values and abstract formal structures .
4 If you have been working at extreme depth and then call a halt do n't block the holes up .
5 We have been working at improving race relations in Britain for over 30 years , under successive Governments .
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