英语的单数变复数

题目

英语的单数变复数
this is my friend
that is his watch
is she your parent?
is it his family photo?
he is a man
i am an american
it is an orange orange
it is a happy family
it is an apple tree
there is a woman doctor in the office
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答案

these are my friendsthose are his watchesare then your parentsare they his family photosthey are menwe are americansthey are orange orangesthey are happy familiesthey are apple treesthere are women do...