That's a box变成复数形式

That's a box变成复数形式 that's a dark red box复数 That's Chinese bike.变成复数形式 That's an egg in the box改为复数形式 It is a red pencil box.变成复数形式. Who is she?She's my teacher What's that?It's a renily--box改为复数形式 It`s a big heavy box.变成复数怎么变 That's a girl.改为复数形式 改成复数形式．1．Is that a bus?2.What's thia?It's a box.3.Where is the pen?It's in the desk. That's his pencil--box．（该为复数形式） This is a box.改为复数形式 把This is a box and that is a knife.改成复数形式 what's this?It's a box.怎么改成复数形式?下面几题也说下就是 1.This is a box.(改为复数形式) this’s a boxs. 1.This is a box.(改为复数形式) this’s a boxs. That is a box 改为复数句子 is that a box改成复数 句型转换1 lt' s a new box [改为复数形式】