The house was in a roaring humour now, and ready to get all the fun out of the occasion that might be in it. Several Nineteeners, looking pale and distressed, got up and began to work their way towards the aisles, but a score of shouts went up:

"The doors, the doors--close the doors; no Incorruptible shall leave this place! Sit down, everybody!" The mandate was obeyed.

"Fish again! Read! read!"

The Chair fished again, and once more the familiar words began to fall from its lips--"'You are far from being a bad man--'"

1）and ready to get all the fun out of the occasion that might be in it. 这里的the occasion 与 that might be in it. 是定语从句关系吗？

     不应该是同位语。如果是定语从句，that是主语，那么it指的是什么？ 句子的意思又如何理解？

2）通常是否应该说scores of shouts, 而不是a score of shouts ？

3） 明明是The Chair 是人，（是伯吉斯牧师，是个男人），为什么这里用了its（fall from its lips）呢？