问题补充：
Mary is going to park on Sunday.(改为一般疑问句)
答案：
Is Mary going to park on Sunday?Mary星期天打算去公园吗?
======以下答案可供参考======
供参考答案1:
Is Mary going to park on Sunday?
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供参考答案2:
一般疑问句要将谓语题前。Is Mary going to park on sunday?
供参考答案3:
Is Mary going to park on Sunday?
