问题描述：
谢谢.
问题解答：
What is your uncle doing now?
He is walking in the park.
What is your uncle doing?
He is taking a walk in the park.
What is your uncle doing?
He is walking in the park.
What's your uncle doing?
He is go for a walk in the park.
what is your uncle doing?
he is walking in the park
what is your uncle doing?
He is walking in the park.
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