[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.