How I wish I _____ the army then. I would have become a soldier.

A．attended

B．had attended

C．would have attended

D．have attended

每六个月进行一次预防性试验的绝缘安全用具是（）。

A、绝缘棒

B、验电笔

C、绝缘手套

D、绝缘绳