對It’s my little brother.提問用Who is he？還是What is that？

對It’s my little brother.提問用Who is he？還是What is that？

對It’s my little brother.提問用What is it？
解析：嬰兒時期，不用he和she，通用it

that is a jacket變複數形式

Those are jackets

This is a desk複數

These are desks.
PS:請尊重回答者的勞動，不要最後轉成投票，不懂的話，還有追問，

is的複數形式是什麼？
如this的複數形式是those

are

desk怎麼變複數？
以k結尾的都加s嗎？

desks
是

desk的複數形式怎麼寫

desks

desk（複數）是什麼？

標準答案：直接+是，是規則變化：desks

That is a desk .（改成複數）

Those are desks

1.ls this a box？（改為複數句子）2.What's that？（用egg回答）3.Steve is eleven.（對畫線部分提問）
4.Amy is in Class Two（對畫線部分提問Two）5.Those are erasers（改為一般疑問句，並作否定回答）

Are these boxes？
It'an an egg
How old is Steve？
Which class is Amy in？
Are those earsera？No，they aren't

Who is she？She's my teacher What's that？It's a renily--box改為複數形式

Who are they？
They're my teachers.
What are they？
They're renily-boxes.