1) Write these questions so that they sound more polite: 
1. Where is the nearest post office? - Could you tell me, where ____________?
2. Is there a post office near here? - Could ypu tell me, ________ a post office near here?
3. How much is the post card? - Could you tell me,  how much __________?
4. Are there any welght limits for small packets? - Could you tell me, ______ any weight limits for small packets?
5. Do i have to pay extra for the stamp? - Could you tell me, _____ extra for the stamp?
6. Did you receive any letters for my name? - Could yo tell me, ________ any letters for my name?