a. ‘I’ in this passage refers to the author, Jerome. He didn’t intend to do all the packing by himself. Instead, he wanted to direct or supervise the packing process. b. The job referred to here is packing for their trip. c. The speaker, Jerome, wanted to direct George and Harris on how to pack, occasionally intervening with comments like "Oh, you", "Here, let me do it", to correct them. Essentially, he wanted to teach them how to do it properly. d. Jerome believed that he could boss the job because he prides himself on his packing skills. In his view, he knows more about packing than any other person living.