A．战友
B．姨表
C．父女
D．邻居
参考答案：C
解析：[听力原文]这是我们的老街坊赵阿姨，这是我老闺女小娜，刚转业回来。问：说话人跟小娜是什么关系
If you feel tired out and unable to think clearly,that is________you have to get a rest.[ ]
A. why
B. when
C. whether
D. what
