问题描述：
there ＿ on the wall .they are very beautiful .a.are photoes b.are photos c.is ...
there ＿ on the wall .they are very beautiful .
a.are photoes b.are photos c.is a photo
there ＿ on the wall .they are very beautiful .
a.are photoes b.are photos c.is a photo
问题解答：
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