【题目】Not once ________ to Michael that he could one day become a top student in his class.
A.occurred it
B.it did occur
C.it occurred
D.did it occur

【答案】D
【解析】句意：对迈克尔来说，他有朝一日会成为班上的尖子生，一次也不会出现。Not once用于句首，句子使用部分倒装，故选D。