1.Mr and Mrs Zhang all teach in our school.
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答案：all→both 考查代词。上文提到两个人，用both作同位语。all指代三者或者三者以上。
2．My first one job was to help others take care of little children.
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答案：去掉one 考查代词。my first job “我的第一份工作”，one多余。
3．My parents have done a lot for me, and I think I should do something special to express my thanks to him.
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答案：him→them 考查代词。此处指代上文提到的My parents，用them代替。
