根据首字母及汉语提示，完成下列单词的拼写，使句意明确，语言通顺。
It is p_______（礼貌的）to offer seats to the old on the bus.
When swimming, you should put s_______（安全）first.
The newly-opened museum is certainly w_______（值得）a visit.
Could you please l_______（借）me your dictionary?
Please accept our best w_______（祝愿）for your exams.