Is that his toy？No，it isn't.变成复数句我不会做（没学过）

Question

还有They have English books.变单数
He has black hair.同义句
That is her purple skirt .同义句
The man is in a white shirt.He is my uncle（合并句子）

Answer 1

Are those their toys? no, they aren't
she或he has an english book.
his hair is black.
that purple skirt is hers.
the man who is my uncle is in a white shirt.

Answer 2

Are those their toys? no, they aren't
she或he has an english book.
his hair is black.
that purple skirt is hers.
the man， my uncle is in a white shirt.