Example sentences of "but we have be [v-ing] [prep] " in BNC.

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1 Well so much for the sea surface temperatures of the past , but we 've been looking at our records of the compounds in the sediments even more carefully and what we 've seen in there are molecular fingerprints which do not match those of the marine organisms .
2 But we 've been talking about it for three four months .
3 But we 've been asking during this programme will the real John Major please stand up .
4 But we have been working on a few things , just as we did before the first leg .
5 We must , surely , eventually get to recovery , but we have been waiting for it for a long time .
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