问题描述：
Sofa is made of ___.
They are fiying kites ____ in the gentle breeze.
Don't cross the road when the traffic lights are red.
____ _____ cross the road when the traffic lights are red
They are fiying kites ____ in the gentle breeze.
Don't cross the road when the traffic lights are red.
____ _____ cross the road when the traffic lights are red
问题解答：
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