Example sentences of "[vb -s] show [pers pn] [prep] be " in BNC.

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1 Occasionally long-term contracts have been used , but recent experience has shown them to be uncertain , given the volatility of currencies .
2 Experience here has shown it to be highly successful .
3 The theoretical advantage of this technique is that it deals directly with the oesophageal varices without affecting liver perfusion : a prospective study has shown it to be superior to standard and distal splenorenal shunts in patients with portal hypertension secondary to schistosomiasis .
4 Tests carried out by Australia 's CSIRO research body has shown it to be effective against over 30 pests ranging from beetles to nematodes .
5 I have seen a kingfisher here and a survey of the pond has shown it to be very important for invertebrates as well as amphibians .
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