[1] it amazes me that a week ago, only seven days prior to the big event, i was so worried that my camp presentation on conservation would be a big flop. [2] a teacher once told me that if you grab the audience's attention at the very beginning, they'll be hooked. [3] she was right. [4] i began my presentation by showing how a solar cell and a simple wire powered by the sun could use the sun's powerful rays to make a fan spin. which is the best revision of sentence 1? it amazes me that a week ago – seven days prior – i was so worried. it amazes me that a week ago i was worried that my camp presentation would be a flop. it amazes me that i was worried that my conservation would be a flop.