用am,is,are,was,were填空.
用“am/is/are/was/were"填空
用am,is,are,was,were填空.
1、用 am ,is ,are ,was ,were ,填空
用am is was are were造句
is----------was.are---------were.am---------?
am is are was were
用is,are,was 或were填空
用be动词(am,is are ,was,were)的正确形式填空
用be 的正确形式填空并翻译( am is are was were)
用正确的be动词(am ,is ,are ,was,were)填空
用is,was are,were am,was造句,
英语用am,is,are,was,were造句?