If someone is ______on the bus,youmay ask"could you please put out the cigarette"

问题描述:

If someone is ______on the bus,youmay ask"could you please put out the cigarette"
Mr Zhang isn't in.Can I take a______for him?

Smoking如果有人在公交里面吸烟,你也许可以说“你可以把烟熄灭吗?”