上路行驶的机动车未放置检验合格标志的，交通警察可依法扣留机动车。
参考答案：对
I have done everything _____ was possible to do to prevent him from _____ the risk but in vain. [ ]
A. it; cutting
B. that; running
C. that; cutting
D. it; running
公用建筑面积分摊系数
