题目内容：

The workers were resting with the machine ________.
A.run
B.running
C.to run
D.runs

优质解答

考查的是with的复合结构
With 加宾语加宾补
工人在休息而机器是运转的机器是自己运转,它们之间构成的是主谓关系,所以宾补用现在分词running