______, the new electronic device they designed is now in regula

______, the new electronic device they designed is now in regular operation.
A、With the solved problem
B、With this problem being solved
C、With the problem solved
D、With this problem to solve
【正确答案】:C
【题目解析】:考查with的用法。with+宾语+宾语补足语,它在句中主要用作状语,表示伴随、原因、时间、条件、方式等;其中的宾语补足语可以是名词、形容词、副词、现在分词、过去分词、不定式、介词短语等。句意:问题被解决了,新机器现在可以大量生产了。故选C考点:考查with的用法