问题描述：
you must come home at 6 'oclock,下面的提问第二个对吗?
1：must you come home at 6 'oclock ?
2：Do you must come home at 6 'oclock ?
1：must you come home at 6 'oclock ?
2：Do you must come home at 6 'oclock ?
问题解答：
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