用所给词的适当形式填空.
what【 】he【 】【say】 he says “keep off the grass”
【 】your mother 【 】【cook】now please【 】【not make】noise in class
按要求改写句子
we should be quiet in the reading room 改为同义句
we【 】【 】【 】in the reading room
the signs mean different things 改为否定句 they are taking a walk in the park 改为一般疑问句
the signs【 】【 】different things 【 】【 】they【 】in the park