In which sentence is the underlined phrase an adjective prepositional phrase? many rooms inside the pyramid were sealed with stone slabs. the pyramid of khufu is one of the wonders of the ancient world. long ago, the pyramid of khufu was covered with a limestone layer. the pyramid of khufu stands in giza near two other large pyramids.

1. list two reasons why fossil fuels should continue to be used as a source of energy in america.

sentence lenght varies according to word choice.you select which word to use and that will require to use other expressions that collocate with the word chosen.sentence length will vary   according to the choice of words you make to express your ideas.