What does Mary doing.这句话有什么错误

What does Mary doing?She is eating.错在哪 What does Mary doing.这句话有什么错误 what does she doing? —What does Mary like doing?—She likes reading c() very much What does the boy ----- doing? what does he------[do/doing]? what does he like doing? what ______(is/are) mary doing? what ______(is/are) mary doing? what does mary want betty to get? what does mary have for dreakfast? What does mary have for breakfest? what does Mary have forbreakfast 的意思 What does Mary take for her trip? what does Mary have in her box?还是What does Mary has in her box? what does tom doing on sundays对吗 what does it like doing?的意思 what does he like doing the morning..