试题 试卷
题型：单选题 题类：模拟题 难易度：普通
- Sure, thanks. Please tell Helen to call me back when she gets home.
—A map is helpful，I think．
—I see. But it's really hard to choose.
— I was ill in hospital.
— They're for public. This ______________ of green smart traffic is everywhere in Xiangyang City.
试题篮
