h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Here's (hears) some more (maw) for you to ponder
1. We must polish the Polish furniture
2.The farm used to produce farm produce
3. The dump was so full it had to refuse more refuse
4. The soldier decided to desert in the desert
5. This was a good time to present the present
6. The bass caught a bass
7. When shot at the dove dove into the bushes (as a UK speaker I think I would be more likely to say "dived" here)
8. I did not object to the object
9. The insurance was invalid for the invalid.
10.The bandage was wound around the wound
11. The oarsmen had a row about how to row.
12. They were too close to the door to close it.
13. To help with planting, the farmer taught his sow to sow (sew?)
14 After a number of injections my jaw got number
15 How can I intimate this to my most intimate friend.
These wonderful confusions are what makes cryptic crosswords good brain food