下面是迈克和他妈妈的一段对话，根据会话内容回答问题。
Mike: What day is it today?
Mom: It's Wednesday.
Mike: Hmm... We have Chinese, art and math on Wednesdays.
Mom: Wait! Tomorrow is Thursday. What do you have on Thursdays?
Mike: Oops! We have English, math and science on Thursdays.
1. What day is it today?
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2. What does Mike have on Wednesdays?
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3. What day is it tomorrow?
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4. What does Mike have on Thursdays?
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