1.you mustn·t shout in a museun（改为同义句）

1.you mustn·t shout in a museun（改为同义句）
you_____ _____ _____in a museum.
2.The wall around the Forbidden City are 10 metres high.(对划线部分提问)
_____ _____ _____ the wall around the Forbidden City?
第二道是 How high is 还是How high are？