Not once________to Michael that he could one day become a top student in his class.

(2013·湖南，35)

A．occurred it

B．it did occur

C．it occurred

D．did it occur

借记卡挂失，如客户密码也遗忘，应先办理（）后，再办理（）后再办理补卡，补卡须经会计主管审批。