Sentence 1: Dave just started a new job in accounting. 
 Sentence 3: Accounting was his major in college but he never worked in it 
 Sentence 4:  He was nervous he wouldn't be good at it 
 Sentence 5:  A few days into his job Dave picked things up quite easily 
 Option 1: He had never had an accounting job before but will never be nervous about it. 
 Option 2: He had never had an accounting job before.