Example sentences of "have to be on our [noun] " in BNC.

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1 We 'll have to be on our mettle from the start . ’
2 We 've to be on our guard all the time really , we 've to be on our guard all the time , all the time
3 We 've to be on our guard all the time really , we 've to be on our guard all the time , all the time
4 ‘ I 'm afraid we have to be on our way , Colonel , ’ Bill Robins explained .
5 But there are many cases where the merging of meanings are more and we have to be on our guard .
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