The sign（on the grass）means we shouldn't walk on the grass 划

which sign means we shouldn't walk on the grass?对定语提问,特殊疑问词用whichplease give the camera to the man双宾语的转换,两个宾语互换位置,加上介词 再问： 还有一题，谢谢~~ Please give the man the camera。同义句 再答： 已经回答并解释了，保证正确