What did she have?是否正确,还是该用has代替have?

did she has是否正确? She must have been tricked 是否确的说法吗?用have还是用has 为什么? 一般过去时 when did he have breakfast? 用 have 还是 has What does she have为什么这用have而不是has? 用括号里单词的正确形式填空what( )sue( (have) She has many sports thing. she应该是have还是has 人名是该用has还是have what did she have for breakfast?（用egg回答） what did she have for dinner? what did she have for breakfast是什么意思? and what did she have for What she did has nothing to do with us.为什么不用have