运输腐蚀性物质时，驾驶员应平稳驾驶，密切注意路面情况。在路面条件差而不能确保易碎容器完好时，应果断改变行车路线。
参考答案：错
使用自动售票机异地售票均核收铁路异地售票手续费。（）
Kathy told me that all the doors and windows _______ when she arrived this morning.
A．have cleaned
B．have been cleaned
C．had cleaned
D．had been cleaned
