题干

It is dangerous for people to walk along the street with huge trucks_____ with concrete____ to and from.
A.loading; runningB.loaded; run
C.loaded; runningD.loading; run
上一题 下一题 0.4难度 单项选择 更新时间:2018-08-16 10:17:28

答案(点此获取答案解析)