这次有点困难啊，好多句子，虽然有标点，有逗号，但是句子还是太长了，很多的形容词，大量的环境描写，找答案找的我都不确定了

What is the mantra (short saying recited often as a kind of password) in Underland?

Many sink down to the Underworld ,and few return to the sunlit lands.

How big is the cave?

A cave so large that it scarcely seemed like a cave at all.

What else do they discover on the shore of the underground lake?

A city that so queer quiet, nearly as dark.

Where does the Warden of Underland take them?

A great castle with few windows in it were lighted

What is the name of the sentry?

Mullugutherum

When the Black Knight at first laughs at their quest and interprets the writing “under me” as an accident of nature, how does Puddleglum respond?

He was shouted “there are no accidents and we were follwed by the guide who is Alsan ,that he was konw all the things .

What does this reveal about Puddleglum?

The words maybe mean nothing that just happend by a accident.But they don’t konw which message is ture and they want to believe the sign that from Aslan.