– What’s wrong with your ipad2? The sound is not clear.
--Yes. It has been broken for some time.
A. e out
B. ing out
C. to e out
D. came out
网友回答
A. e out
(答案→)B. ing out
C. to e out
D. came out
解析：考查非谓语动词。逻辑主语sound与e out之间是主动关系，而e out本身也是不及物动词词组，故不能用过去分词作后置定语。而句子的谓语动词是is，故不能再出现谓语动词，D排除。故选B.