兒童英語(yǔ)小故事 93. He Rides His Bike

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MP3下載

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His left foot is on the pedal. His right foot is on the ground. He pushes down on the pedal. He takes his right foot off the ground. He puts it on the pedal. The pedals start to go around. They go around in a circle. His knees go up and down. The bicycle rolls forward.