问题描述：
找英语高手做个题目!
up across off along around through over
She's skateboarding___the pavement.
He's cycling____the hill.
He's skateboarding___the tunnel.
They're cycling___the track.
He's skateboarding____the road.
He's skateboarding____the roof.
He's skateboarding____the gate.
谢谢!
问题解答：
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