The best treatment is behavior therapy hope this helps
Richness in the appearance of both the knight and his horse, the description of his horse as "monstrous", the statement that no man as mighty as the Green Knight has ever been known before.
To speculate means almost the same as to contemplate. They both have to do with thinking over a subject thoroughly/ looking at every side of the subject. Hope this helps! :)
The type of aid underlined in the sentence is Participle,
