what's that 改为复数

What' s that?怎么改为复数? 1.what s that?(改为复数) 2.it s a cat (改为复数) 3. What are these?They are apples.(改为单数句子)That's a bus.(改为复数句子) what is that改为复数句 改为复数形式 Is that an English book?What"s this in English?It is that's an eraser改为复数句 That's a girl.改为复数形式 that s my brother改为复数句 What's this?怎么改为复数形式 What's that的复数形式 帮我改变句子的句型is that a bus?改为复数形式what’s this?it’s a box.改为复数形式wh 英语填空题5道This is a cake?(改为复数句）What's that (改为复数句）Those are to