跪求，帮改错啊！！！~~~~~~~~

people know some aniaml (animals) can be trained to carry messages for them。in 1870，who (when) the Germany (German) got to paris (Paris)，a (the) city was cut off from other cities，peopie there tired (tried) many diffferent ways of (to) send news ，(and) one way was to use pigeons。the enemy shot (at) them，but they flew even fast (faster)。in four months about 156，000letters were sent by them，now pigeons are still used。this is because that some times (sometimes) only the little pigeons can carry messages there (which/that) it is difffcult for man to do.that is because (why) they are called postmen with feathers

people know that some animals can be trained to carry messages for them。in 1870，when the German got to Paris，a city was cut off from other cities，people there tried many different ways of sending news ，one way was to use pigeons。the enemy shot them，but they flew even fast。in four months about 156，000 letters were sent by them，now pigeons are still used。This is because that