1. Surgeons ..... operations A. performs B. performing C. perform D. performed 2. I'm a midwife, I..... babies A. deliver B. delivers C. am delivering D. delivered 3. Jane is a staff nurse. She ....... the state finals five years ago. A. passes B. passed C. is passing D. was passing 4. A cardiologist is a person who ......... in illness of of the heart A. comes B. moves C. participates D. specializes