Translation of retornar

At noon the oldest soon came home. He was a doctor and gave me some salt and other Cuban medicine. I was reluctant to swallow that stuff but the pain and the doctor's smile persuaded me in the end.
They wanted to know everything about relationships in Switzerland. One of the asked me of how guys propose friendships to girls. I did not know what she meant and explained that we were very informal.
In addition it was a good opportunity to see Macau. Already at the airport a guy approached us and tried to convince us into a day tour with him. We explained that we had only three hours left.