Exercise 2

Choose “had to” or “didn’t have to” in each of these sentences about ship’s doctors in the 19th century. A. The doctor had to / didn’t have to deal with serious diseases. B. The doctor had to / didn’t have to be ready to do amputations. C. The doctor had to / didn’t have to be a good doctor. D. The doctor had to / didn’t have to pay for a ticket.