作为青少年来讲，养成好习惯对我们来说很重要。你觉得青少年应养成哪些习惯？补全下面的句子。
参考词汇：help people in need; say dirty words; talk loudly in public; throw litter everywhere; on time; lie to others…
①.I think it’s very important                           .
②.Never                                     .
③.We should                                   .
④.We’d better not                              .
⑤.Don’t                                .