用was,were填空

用 was, wasn't 或 were填空. 用there was 或there were 填空 用“am/is/are/was/were"填空 用am,is,are,was,were填空. 用was ,were,wasn't 填空； 用is,are,was 或were填空 用is,are,was或were填空 急用 1、用 am ,is ,are ,was ,were ,填空 什么时候用was / were 用was,were,is,are填空. ______they students?Yes,____ ____. 用“have,has,had,there is,there are,there was,there were”填空. 用be动词（am,is are ,was,were）的正确形式填空