用be动词正确形式填空

题目

用be动词正确形式填空
1.Mr White( )on the playground now,but he（ ）in the classroom just now.
2.（ ）the window just now?No,it（ ）under my coat.
3.Which（ ）mine,the white shoes or the black shose?

答案

1.is,was
2.was,was
3.is