听力原文： When you live in an apartment building, where only wall separates you from your neighbors, everyone needs to be considerate of each other. Thats not what happened in my apartment building. Someone was always leaving the clothes in the washers and dryers in the laundry room. I got tired of running up and down the stairs to see if the clothes had been removed, so I could start my own one. Obviously someone else got tired, too. Because one day, someone took clothes from the washer and dryer, and dumped them in the corner. This act started a battle of letters posted on the wall of the laundry room. The first letter was from Mindy Lance who was really angry that her clothes had been removed from the washer and dryer, and dumped. She then threatened to dump everybody elses clothes she herself found in the washer and dryer. Mindy Lances letter enraged other residents and they posted the letters to her. Eventually, Mindy began to behave properly but hard feelings remained. The problem couldnt have been resolved better. If residents had informed the building manager, she then could inform. all residents that the clothes should be removed from the washers and dryers within 50 minutes after their wash is done. Those who refuse to obey might not have their leases renew. That could be a fare consent solution. Neighbor problems may sometimes seem inevitable, but its important to resolve them fairly. 20. What does the speaker think residents in an apartment building need to be? 21. What started a battle of letters in the laundry room? 22. What does the speaker think might be a better way to resolve the problem?21．