Example sentences of "have not [adv] [verb] is " in BNC.

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No Sentence
1 What we have not previously considered is that a cultural trait may have evolved in the way that it has , simply because it is advantageous to itself .
2 What they have not yet recognised is that , if that is normality , if those are the institutions the system requires and that their normal behaviour , then the system is wrong and another is needed , a new economic model which will mark an advance from the sterile confrontation between Capitalism and Socialism , thesis and antithesis , to the synthesis providing a long overdue advance in democratic practice and a means of treating the chronic and disabling debility of the national economy .
3 What they have not yet done is to form a united organisation , or political party , to press that demand .
4 What we have not yet considered is where the body clock is and how it is adjusted by external time-cues .
5 The question we have not yet addressed is the nature of the process whereby the natural sciences were released from their subordination .
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