Isay them over and over out loud until they blur into a litany, my own incantation: “, , .”
define litany in the passage above, use context clues to you,

a.

nonsense

c.

prolonged repetition
b.

literature

d.

mixture

d. cassius cannot believe that a weakling like caesar has become so great.

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

the meaning of the phrase fnch clear means it is understandable and readable.