They‘re eggs 改为单数句

They‘re eggs 改为单数句 Are they eggs?如何改为单数句? they are eggs改为单数句 they're expensive knives.改为单数句 They're my uncles.改为单数形式. They're English books.改为单数形式 They're good policewomen.(改为单数形式) They're American boys.(改为单数) what are they doing?They 're play with yo-yos改为单数句 they're or anges改单数句 There are some eggs in the basket改为单数句 These are eggs.(改为单数句）_ _ _eggs. There are some eggs in the basket改为单数句 Those are eggs.（改为单数句）怎么办? 变为单数句:They like hamburgers and eggs for lunch. They like hamburgers and eggs for lunch.的单数句 They are some eggs on the desk.该单数改为单数句子！ They're my cousin.(改为单数形式）