他正在练习如何在滑板上保持平衡。
He is practicing how to stay balanced on the s___skateboard
她在公园里练习滑板技巧。
She practices tricks on her ___skateboard in the park.
放学后，孩子们经常在广场上玩滑板。
After school, kids often play with ___skateboards at the square.
我哥哥的滑板是红色的。
My brother's ___skateboard is red.
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