yesterday ( be ) Mother'day be是is还是was ,

yesterday ( be ) Mother'day be是is还是was , How is your mother yesterday?这个句子中的be动词是用was还是is? be+过去分词怎么确定be是is还是are还是were还是was? It was Mother's Day yesterday 是What was the day yesterday还是What was the date yesterday还是Wh ·I was helping my mother is the kitchen all day yesterday. what day ____(be)it yesterday? What day ________ (be) it yesterday? yesterday is Sunday还是yesterday was Sunday my mother was busy all day yesterday的同义句 What day (be)it yesterday It (be)Friday I was late yesterday.改成一般疑问句是Did you be late yesterday?么