It is my ruler. The ruler is mine.
It’s her desk. 
It’s our school. 
It’s your computer. 
It’s his car. 
They are my shoes. 
She is doing morning exercises at 6:00 a.m.
示例：Whose cat is this？ 
(book)
My birthday is on May 1st. 
(April 3rd) 
She will play the pipa on the party. 
(sing a song) 
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