Example sentences of "know [conj] to be [adj] " in BNC.

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No Sentence
1 I do n't know but to be truthful I am not hundred percent sold on any of it .
2 She did n't know whether to be grateful or alarmed that her time here had softened her .
3 She did n't know whether to be pleased or angry .
4 Adam did not know whether to be glad or sorry he had not obtained an English newspaper while away .
5 ‘ Even now , you do n't know whether to be cross or laugh . ’
6 He did not know whether to be amused or angry .
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