这两篇短文里各有十处错误,请把他们找出来并改正,务必要正确,

原：
Animals never seem to have bad days.They are always ,happy to see you.Scientists say play with a pet soothes you and that lowers your blood pressure .If you have a pet of your own,visit a friend who does.Beating a bad mood not only make you feel better.A positive outlook might also help you staying healthy.Arecent medical study which showed sad or angry people are much likely to get sick than people who are happy.And get busy and cheer up!If you are feeling down,spending times with a pet just might cheer you up.
The world trade center in New York city burned in the morning of Septermber 11st ,2001 after thetwin 110-storey towers were hit by two hijacked planes crashing into them Both towers felt an hour after the attack.Pedestrians nearby ran for their life as one of the twin tower collapsed directly behind them.The building of US Deffence Department seriously damaged.Smoke was seen in the US Capital at the back.Latest report says what 276 people are proved dead and6453 missing.
改：
Animals never seem to have bad days.They are always ,happy to see you.Scientists say play with a pet soothes you and that lowers your blood pressure .If you have a pet of your own,visit a friend who does.Beating a bad mood not only make you feel better.A positive outlook might also help you staying healthy.Arecent medical study which showed sad or angry people are much likely to get sick than people who are happy.And get busy and cheer up!If you are feeling down,spending times with a pet just might cheer you up.
The world trade center in New York city burned in the morning of Septermber 11st ,2001 after thetwin 110-storey towers were hit by two hijacked planes crashing into them Both towers felt an hour after the attack.Pedestrians nearby ran for their life as one of the twin tower collapsed directly behind them.The building of US Deffence Department seriously damaged.Smoke was seen in the US Capital at the back.Latest report says what 276 people are proved dead and6453 missing.

Animals never seem to have bad days.They are always ,happy to see you.Scientists say play with a pet soothes you and that lowers your blood pressure .If you have a pet of your own,visit a friend who d...