Last week our organized agreat acti

Last week （our 改为 we） organized agreat activity to look for （modern Lei fengs改为Lei Feng moderns） around us .In（加上the） friday afternoon ,we（ leave 改为left）school with （cameeras改为cameras） in hand ,（hearing for the street去掉） We （fist改为first） came across（加上the） blood donation bus.Each of these donations would help（加上to） make a big difference to those in need.Touched,we took（ photo改为photos） .Then,（加上when we）（across 改为acrossed） the street ,（they改为we） noticed （加上that）someone（ who were改为was） helping a blind man .On the bus back to school ,several children （eager offered 改为were eagered to offer ）their seats to an （elderly改为old） lady.

Last week, we organized a great activity to look for modern Lei fengs around us .On Friday afternoon ,we left school with cameras in hand ,heading for the street .We fist came across a blood donation ...

在线翻的吧。。。
语法上很有问题！