Mr Black lives in the south of America.He has two children，one isa son named Mike and the other is daughter whose name is Lily.Last September，as soon as Mike had his seventh birthday，he went to school.He's six years younger than his sister，but he always wants to do something for her.
Lily is good at English and maths，but she hates geography（地理）.She doesn't think it easy to remember the names for places，and she often fails in geography exams.
One day，when Mike got home，he saw his sister crying in her bedroom.He came in and asked，"What happened to you，Sister？"
"When we had a geopraphy lesson this morning，"the girl said in tears（眼泪汪汪），"I couldn't，t find where Paris was.
"Don't worry about it，"said the boy，"Try to remember where you put it.I will help you to find it.If not，ask father to buy another one."