More and more people in the city of America are becoming interested in self-produced food．As the interest increases，raising chickens has been popular in some cities．Chicken-raising may not be right for everyone．But the business seems to have a bright future．

"Look，we got three eggs this time．"Collecting eggs is a daily pleasure for the Green family．Mrs．Green says her family began to raise chickens in the back of their home in Maryland last September．"I have been thinking about having chickens for a couple years．But I really just didn't have time to build my own coop（鸡笼） and then find out where to buy chickens．"

Many people in the city raise chickens for their eggs and meat．They think the eggs and meat are fresh，pollution-free，clean and delicious．The Greens hope that their farm teaches their daughter to be caring．The eggs are yummy．"I don't think we've ever thanked where food comes from．But whenever we pick up the eggs，we always say，‘Thank you，ladies．'That's really something that is hard to teach if we don't raise chickens on our own．So it's been a great learning chance for my daughter，too．"

However，it is not allowed to raise chickens in many cities．In some cities，people must have large pieces of land if they want to raise chickens．In some other cities，people need an agreement with neighbours and they can't raise many．

阅读以上信息，用恰当的词完成下面的短文，每空一词．

More and more are raising chickens in big cities．They show a great （61）___ in self-produced food．Raising chickens has different （62）___．First，it can make people（63）___ when they collect eggs．Second，the eggs and meat are fresher and cleaner than those are bought at the market．Third，raising chickens teaches the children to be thankful which is difficult to learn if they don't raise chickens （64）___．

However，raising chickens isn't allowed in many cities and people can't raise chickens （65）___they have an agreement with their neighbours and th