you mustn t walk on the grass at the moment保持句意不变You___ ____

you mustn t walk on the grass at the moment保持句意不变You___ ____to walk on the grass at the mome

you mustn t walk on the grass at the moment保持句意不变
You( aren't allowed )to walk on the grass at the mome.
分析 be not allowed to do sth 不允许做某事
加油!不明白再问!

感谢回答