英语翻译Can animals be made to work for us?Some scientists t____

英语翻译
Can animals be made to work for us?Some scientists t______that one day animals may be taught to do a number of simple jobs.They say t______in a film or on TV we may see elephants,minkeys,dogs,bear,or o______ animals doing a lot of things.If you watch c______ ,you may find that those animals are always given something to e______in return for doing them.The scientists say that many different animals may be taught to do a number of simple jods i______ they know they will get something to eat in return.Of c______,as we know,dogs can used to guard a house,and elephant can be used to do some h______jobs.And we can also teach animals to work in factories.
Apes,for e______,have been used in America to help make cais and scientists believe that these large monkeys may one day get crops in and even d_______trains.
翻译全文