问题

This computer doesn’t work properly, because a certain virus has ____ the operating system.[ ]

A: broken up
B: broken down
C: broken out
D: broken away

正确答案是：

同类题型

Notonlytheworkersbutalsothemachine____notthere.

In the police station, I saw the man from ______room the thief had stolen the TV set.

Sam is my friend, he is a _____ boy now.

My brother is fifteen, but he talked as if he ________ the Long March.[ ]

Little Tom admitted ______ in the examination, ______ the teacher his word that he wouldn’t do that again. [ ]