根据所给的提示词翻译句子
1.当你离开房间的时候，要记得关灯。(when, leave)Remember to turn off the lights when you leave the room.
2.老师生气了，咱们别说话了。(got, stop)The teacher got angry. Let's stop talking.
3.要听懂他们所说的话是困难的。(hard, what, said)It's hard to understand what they said.
4.我们已经决定不开车了。(already, stop)We have already decided to stop driving.
5.当你去购物的时候,你最好带上自己的袋子。(when, better)You'd better take your own bag when (you go) shopping.