the room was full of cigarett s___

1.他无视所有“禁止吸烟”的警示,点了支香烟.He ignores all the "No Smoking" warning,a point cigarettes.
2.一旦开始工作,他就要把它做完.Once started work,he should finish it.
3.不止到你能否为我提供一些该镇的景区信息.Can you not just to provide me with some of the town's scenic areas of information.
4.跟他争论没有用,因为他不承认他所说过的话.No argument with him,because he did not admit he said in the past.
5.碰巧,他们立刻就找对了地方.Coincidence,they immediately find the right place.
6.在批评我之前,你应该让我解释清楚为什么这么做.Criticized me before,you should explain clearly why I do this.
7.这是他们初次见面.This was their first meeting.

In order not to break the rule ,he puts out the cigarette.

He hasn't got any cigarett.
现在完成时的否定结构：主语 + haven't/ hasn't +过去分词
否定句要变some为any

Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.
关系代词which引导定语从句,修饰先行词cigarette ends.
which代替先行词cigarette ends,在从句中做throw away的宾语,而在定语从句中作宾语的引导词都可省掉.