    Sentence 4: | had smallpox when | was 6 months  old. Is it necessary to get a booster at 25?    Sentence 2: I'm a. 25 year old engineering  graduate working in. a public sector bank for 2  years, banking. bores: me, 4% ‘was good at  programming, | have always faired excellent in  all the aptitude examinations, is it too late to  change my line of work? Can { get‘a high paying  job only on the basis of aptitude?