高级经济师报名时间:--Could you mail these letter for me,please?

Could you understand the below clearly ? could you tell me the answer_____the question Could you mail these letter for me,please? --Could you mail these letter for me,please? Could you show me the schedule for the reprocess action ? Could you write something about the importance of languages? Could you write something about the importance of comparison? 孋 linda,could you buy some ()for the party? 孋 linda,could you buy some ()for the party? could you tell me something about the Spring Festival