将下列句子变成复数形式:This is my sister.

问题描述:

将下列句子变成复数形式:This is my sister.
Is that a vlue jacket?
That is her cousin.
Here is my family photo.
What's this in English?
What color is your ruler?
还有:This is my sisiter.

These are our sisters.Are those blue jackets?
Those are their cousins.
Here are our family photos.
What're those in English?
What color are your rulers?
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