8．Shanghai is in __________(准备，筹备) for World Exposition in 2010．

7．Unless you spend _____________(合理的) time together, talking on the phone, writing letters, friendship will die out.

6.They set aside enough money to live in c__________ (舒适) after retirement.

5．An a__________ is a flying machine of any type, with or without an engine.

4．The first settlers struggled to earn their living in spite of great h___________.

3．Mum won’t be at home for a f___________, that is, I will have to be alone for 14 days.

2．Look! The sign reads: “Parking is f__________. ”We had better find somewhere else to park our car.

1．It’s known that Obama was e_________ president of the United States.