You can't use the computer now.It____.

问题描述:

You can't use the computer now.It____.
A.was broken down ; B.is wrong;
C.is bad; D.has broken down.
应该选哪个答案.为什么?

break down就是坏了的意思,主语应该是机器,不能用被动语态,所以答案D是对的.It has broken down.