None of us had expected the middle-aged engineer died his design unpleted.
A. from
B. without
C. with
D. of
网友回答
A. from
B. without
(答案→)C. with
D. of
解析：此题为with的复合结构，句意：我们当中没有一个人预料到这位中年的工程师设计没有完成就去世了。 with his design unpleted在句中作状语，from和of都不能用复合结构，without不合题意，所以选C。