I always believe that no matter how bad something is， you can take something good out of it． The one time I wasn't sure of that was____December 23．

I usually ___ up at 6：30 or 7：00 in the morning． That day， I happened to wake up earlier． I turned on the TV and I saw that a plane had crashed （撞击） into the  Trade Center． I thought it was____ terrible accident． I felt so ____about all the people in the plane．

My wife and I spent the day ____ the terrible pictures over again． When I watched family members looking for ____loved ones， I would never forget the pain in their eyes． I couldn't understand how this could have happened．

A few weeks later， I began to see that perhaps something good ____ from this tragedy （悲剧）． People seem different now， more understanding，more to tolerant （宽容的）．Little things seemed to be such a trouble before， but they are no longer big things now． I realize life is ____short to let myself worry over small things． I've also learned that you can't ____ things for granted． Things change． People go to work and don't come back． One moment they're living and the next minute they're not． And， it doesn't matter who you are， there is nothing you can do about it． We never know when our time will be over，_____we all need to make the most of every minute we have．