– What’s wrong with your ipad2? The sound is not clear--Yes. It has been broken for som

问题补充：

– What’s wrong with your ipad2? The sound is not clear.

--Yes. It has been broken for some time.

A. come out

B. coming out

C. to come out

D. came out

答案：

A. come out

(答案→)B. coming out

C. to come out

D. came out

解析：考查非谓语动词。逻辑主语sound与come out之间是主动关系，而come 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.