Is this the twins photo?Yes,it'theirs对吗?

题目

Is this the twins photo?Yes,it'theirs对吗?

答案

这正确的应该是：
Is this the twins' photo?
这是双胞胎的照片吗?
Yes, it is.
是的.
或：
Yes, this is their photo.
是的,这是他们的照片.