that is a bus.(变为复数句）

that is a bus.(变为复数句） this is a bus.【变为复数句】 Is that a bus?(改为复数句） that is a pen (变为复数） Is that his sister?变为复数句 That shirt is White变为复数句 Is that a bus?复数形式 That is a pen.(变为复数) 将下列单数句变为复数句 1,That is a jacket 2,She is anic That is a jacket She is a nice girl 把这两个变为复数句 Is this a bus （改为复数句 Is it a bus?的复数句