The president was so absorbed in his work that not a sound .
A. did she dare to make
B. dared she to make
C. she dared make
D. she did dare to make
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(答案→)A. did she dare to make
B. dared she to make
C. she dared make
D. she did dare to make
解析：考查倒装句。not为否定词谓语句首应用部分倒装，有根据was absorbed in可知，是过去时，所以A项正确。