问题描述：
将下列各句改成复数
This is a picture.
That is a photo.
She is a lovely girl.
Is it your dress?No,it is not.
There is an old book on the shelf
This is a picture.
That is a photo.
She is a lovely girl.
Is it your dress?No,it is not.
There is an old book on the shelf
问题解答：
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