Directions：Read the passage and answer the questions or complete the statements

　　First Maggie, then 20, asked Stepmom and Dad if she could store a few boxes with them in Washington while she looked for another place to live．Then Maggie said she would like to move in to be with her boxes until her boyfriend Joe bought an apartment．Next Maggie asked whether Joe could move in“temporarily”until the apartment deal was closed．When Lucy and Pablo Sanchez returned home from vacation last Christmas, they found their small living room crammed with his boxes and a second welcome mat next to their own on the front porch(门廊)．Lucy Sanchez says：“I have a headache．”

　　Analysts cite a variety of reasons for this return to the nest．The marriage age is rising, a condition that makes home and its benefits particularly attractive to young people, say experts．A high divorce rate and a declining remarriage rate are sending economically pressed and emotionally frustrated survivors back to parental shelters．For some, the expense of an away-from-home college education has become so big that many students now attend local schools．Even after graduation, young people find housing costs soaring．

　　Sallie Knighton, 26, moved back to her parents' suburban Atlanta home to save enough money to buy a car．Her job as a teacher provided only enough money to cover car payments and an additional loan she had taken out．Her mother agrees,“It's ridiculous for the kids to pay all that money for rent．It makes sense for kids to stay at home．”Bradley Kulat, 25, makes about ＄20,000 a year as an equipment technician in a hospital．That is enough to support a modest household, but he chooses to live at his parents' house outside Chicago．He admits to expensive tastes．He recently bought an ＄8,000 car and owns an ＄800 stereo system, a ＄300 ten-speed bike and an elegant wardrobe．Says his mother Evelyn：“It keeps you thinking younger, trying to keep up with them．”

　　Sharing the family home requires adjustments for all．There are quarrels over bathrooms, telephones and privacy．Some families manage the delicate balancing act．At 34, Esther Rodriguez dreaded returning to her parents' Denver home after three years of law school forced her ＄20,000 into debt．“I thought it was going to be a restriction on my independence,”she recalls．Instead, she was touched when her father installed a desk and phone in the basement so she would have a private study．But for others, the setup proves too difficult．Michelle Del Turco, 24, of Englewood, Colo．, a Denver suburb, has been home three times－and left three times．“What I considered a social drink, my dad considered an alcohol problem,”she explains．“He never liked anyone I dated, so I either had to sneak around or meet them at friends' houses．”

(Write your answer with no more than FIFTEEN words．)

1．What does“a second welcome mat next to their own on the front porch”________(Paragraph 1)mean to Lucy?

2．Today, more and more people choose to return to the nest for ________ and ________ reasons．

3．The underlined expression“to admit to expensive tastes”means ________．

4．Why did Michelle Del Turco have to sneak around or meet his date at friends' houses?