根据短文内容及所给首字母提示写出所缺单词.使短文意思完整,每空一词.

根据短文内容及所给首字母提示写出所缺单词.使短文意思完整,每空一词.
More and more families like to keep dogs as pets.But not all dog owners think of others while they are walking their dogs.So many towns and cities around the world f 46 a mess of left-behind feces(粪便)from dogs.
In February of this year,a town in France started a new p 47 to teach dog owners a lesson.The g 48 sent about 20 volunteers to search the streets carefully,looking for humans who wouldn't clean up after their dogs.The volunteers who seemed to have no c 49 aim would then move nearer to the pet owner,then start a conversation in order to get the dog's name."W 50 the name of the dog and its type,we can e 51 discover the owner from the registered(登记) database(信息库)held in the town hall." an officer e 52 .The volunteers would then pick up the dog feces and the package would be p 53 to the pet owner's house.In the past few m 54 ,the town has seen a 70% decrease减少)in the amount of dog feces left on public streets.
Maybe many cities in our country can follow its e 55 .In this way there will be fewer complaints about dog owners.