选错.改错。下列各句画线部分均有一处错误，请找出，将其字母序号填入题前的括号内，并且在横线上改正。（1）（2）（3）（4）（5）
We should ________ before we cross the street． A．inn quickly B．play C．look left and right
Why not ________ out for a walk? A．going B．to go C．go
-What do you like? --I like ________． A．to playing basketball B．playing computer games C．play the piano
In western countries，they eat ________ on Thanksgiving Day． A．chicken B．turkey C．beef
Mountain Everest（珠穆朗玛峰）is ________ mountain in the world． A．the highest B．highest C．the tallest
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