choose的过去式和过去分词和名词

　　Whatever system you choose, it must be run in properly.

　　不管你选择什么样的体系，都必须经过适当的磨合。

　　With digital you can choose the camera angle you want.

　　有了数字电视你就可以选择你所需要的摄像角度。

　　Which features do you look for when choosing a car?

　　你挑选轿车时要着重哪些特点？