Do you know____this time yesterday?

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Do you know____this time yesterday?
a.what she was cooking b.what was she cooking（为什么选A?）
Neither John nor his father____soccer
a.likes b.like （为什么选b）
Both the teachers and the students____pleased to hear the exciting news.
答案是was但为什么不能用were

选A因为前面有Do you know问句,问句后应用陈述句,b是问句
neither nor要看nor后面的主语,因为主语是father,所以应该选A才对呀
前面用了both and,这是一个主语,也就是一个整体,所以应该用was

1.Do you know____this dictionary belongs to? Do you know _____this time yesterday? What_____________________(you/do)this time yesterday? Do you know________ at this time yesterday? ——Do you know____this dictionary belongs to?——Let me see.Oh, Do you know____this dictionary belongs to?Let me see.Oh,it's what did you do at this time yesterday? What were you doing (do)this time yesterday. 1Do you know _____ this time yesterday? ( ) did you do yesterday What do you do yesterday? do you know what they were doing this time yesterday 用were对吗