I thought the teacher would say something about our exam result but he ________ it.

A．doesn't mention

B．hasn't mentioned

C．wouldn't mention

D．didn't mention

工程师在确认工期是否顺延，应当首先( )。

A．依据合同确认责任者

B．分析施工进度计划

C．判断是否符合顺延工期的条件

D．考察事件实际造成的时间