Question: Johnny was sitting up, his head swaying from side to side, his eyes on Drew and Anse.
Johnny sat in a chair while watching Drew and Anse.

Answer: it is not possible to tell

Question: Narrow windows offered a good view of the street festivities.
You could only see the mountain from the window.

Answer: no

Question: Presumably his place was taken by another juror who really believes that the police arrest people completely at random.)
Presumably he had his place taken by a juror who believes police arrest people randomly and with disregard for the law.

Answer:
it is not possible to tell