1 Please don't smoke in the cinema.
2 There's some water on the floor in the snack bar. Be careful, Grandma.
3 The shopping centre is so clean. Don't litter here, please.
4 You shouldn't eat or drink in the library.
翻译:
1. 请不要在电影院里抽烟。
2. 小吃店的地板上有些水。小心点,奶奶。
3. 购物中心很干净。请不要在这里乱扔垃圾。
4. 你不应该在图书馆吃东西或喝水。