SISTER / WORK / ACCOUNTANT / COMPANY / FIVE YEARS. A. MY SISTER HA...

20. sister / work / accountant / company / five years. a. My sister has been working on an accountant in this company for five years. b. My sister has been working as an accountant in this company since five years. c. My sister have been working as an accountant in this company for five years. d. My sister has been working as an accountant in this company for five years.