问题描述：
what is your______ birthday?
He is 12 years old.He is ___ ___ boy.
I often help my mother with housework .I often __ my mother ____ ____.
改为同义句
He is 12 years old.He is ___ ___ boy.
I often help my mother with housework .I often __ my mother ____ ____.
改为同义句
问题解答：
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