阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。 People realize that, {#blank#}1{#/blank#} animals may not have the same intelligence as human beings, they are smart enough to learn certain things.
Dogs are {#blank#}2{#/blank#} (extreme) useful as companions for blind people. When a dog has been properly trained, he will always lead his master {#blank#}3{#/blank#} the right direction and keep him out of danger.
Horses are also able to learn many things. Horses that are used for guard or police duty must learn never to {#blank#}4{#/blank#} (frighten) of noises, traffic, and other disturbances. Racing horses are also quite strong. Therefore, it is necessary for those people {#blank#}5{#/blank#} train them to be very patient and understanding.
The moving pictures and television can use {#blank#}6{#/blank#} (train) animals too. Some animals, such as monkeys and foxes, are easy to film. {#blank#}7{#/blank#} you have to do is make a trail in front of the camera by dragging something that smells good to {#blank#}8{#/blank#} animals over the ground. Big animals, such as lions and tigers, can be photographed as they bound happily back to {#blank#}9{#/blank#} families and dinner. If a movie actor is nearby, the well-trained animal will pay no attention to him. {#blank#}10{#/blank#}, the audience may imagine that the actor escaped a terrible death by the skin of his teeth.
