根据句意及首字母或汉语提示,写出所缺单词（小学的）

根据句意及首字母或汉语提示,写出所缺单词（小学的）
My g____ is 65 years old,but he still(仍然) works in a middle school
The sister of my father is my a ____.
My parents are both English t____ in No.2 middle school