7A完形填空

Can you make animals w___ for us?Some scientists think that one day we can teach a___ to do a lot of work for people.Then say that in a f___ or on TV,you may see elephants,monkeys,tigers or some other animals always have a little f___ to eat after they do something.Scientists say that people can teach m___ different animals to do some of the work when they know they will get something to e___.We all k___ elephants can carry large things,and d___ can look after houses.And we can teach animals to work in factories.In America,for example,people t___ apes to make cards,and scientists think that those b___ monkeys may drive trains one day.

Then say that in a film or on TV,