How did the narrator come upon the House of Usher? He was drunkenly stumbling home after a night at the bar and got lost.

He was invited by a mysterious stranger to have drinks and h'orderves.

He hitchhikes, desperately hoping he will find work ushering at the small theatre.

He was riding on horse back by himself when he crosses the house.

"once there was no rain th end

explanation:

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).