【题目】I have no ideathe cell phone isn’t working，so could you fix it for me?
A.what
B.why
C.if
D.which

【答案】B
【解析】句意：我不知道这部手机为什么不能用了，你能帮我修理一下吗啊？根据“so could you fix it for me?“判断此处用why引导的从句作idea的同位语。