用is.am.are填空 where ( ) they?

用is.am.are填空 where ( ) they? They ____at school用am,are,is填空 用am,is,are 填空 用am,is are填空 用am is are 填空 用am.is.are填空, 用is,am,are填空 用am,is,are填空. 初一英语题目求解答用am is are填空Where( )you from? i( )from beijing( )he 用am,is,are填空.1.what()g\those?2.this()his ruier.3.where()his 用am is are填空 1.Where ____the Jeans?2they___a shirt.3.___thes 用 am is are have has 填空; My brother ( ) stundent.They ( ) an