he is doing his homework 改复数

问题描述:

he is doing his homework 改复数

答案:
【They are doing their homework.】
他们正在做他们的家庭作业.
he他 复数是they 他们
is复数 are
his他的 复数是 their 他们的
homework是不可数名词,没有复数形式
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